Subaru says "around 200" will be made. Why not just declare it at 209?! Hope everyone's having a wonderful day, thanks for watching! I'm hopeful to get to test out one of these rare machines; in the meantime, here's my review of the $50,000 Subaru STI Type RA: ua-cam.com/video/N71CY9M4ZnE/v-deo.html
Why can't we have opposing cylinders firing at the same time? Obviously boxer and V configuration engines are the ones I mean. I presume that timing the detonation might be the problem, but surely there's a way around this? I would expect the torque and BHP figures to improve hugely. I must be forgetting something simple that prevents this being a simple way to increase performance... :-)
@@James-oo1yq Vibration. You go from having four 120-ish degree power strokes per 720 degree cycle (480 degrees of power stroke, so 60 degrees at a time without power at a higher, smoother frequency) to two (240 degrees of power stroke, with two 240 degree gaps) Effectively you have a well balanced two cylinder engine. It would also sound like ass and break gearboxes like there's no tomorrow
I'm guessing that it's gonna bd one of those cars where each individual car's power output varies a bit. So they don't want to have something to stick to.
My best mate has a 2013 club spec sti and lives with his parents still. That's how he could afford to buy a club spec sti. But his mum doesn't drive him around like Zac Ashs' mum.
ElMosqito because where I live all these frat punks drive WRX’s around, vaping thinking there the coolest things out there lol. Those are the same idiots that think they are Rally drivers and wrap there cars around trees...
The EJ25 motor is indeed old, but the fact they installed forged internals is game changer. With a flex fuel kit and upgraded injectors, I could see this platform making north of 400whp easy. Little pricey but since it's a limited edition, they get away with it.
you would think that every boosted engine would get forged internals since its running on boost, heck honda s2000 but forget internals in their engines even though the engine was N/A, kind of shows that subaru are just cheap
Alex Nichols I think Subaru should just stick to making granny mobiles at this point. They literally ignore everything their very large and loyal community asks and keep pushing this garbage on us. I understand it’s forged internals and that’s better suited towards aftermarket upgrades. But you can literally bolt all this onto a 14-15 model sti and be thousands cheaper than they’ll try to sell this money grabbing scheme for.
vr43000gtkid thats what happens when the company gets too greedy, they know people will buy it so they charge 60+ k for an sti thats just slightly modded, i can put 4 k into my 2013 civic si and blow the doors off of this one, i would actually buy a just basic wrx over this one and still have 30+k in my pocket! But yes you are right
Alex Nichols I agree 100% it’s truly a shame when Hyundai is doing a better job at making a car oriented towards the performance community than all the big dogs.
vr43000gtkid you are right, my neighbor bought a 2018 Hyundai tucson fully loaded, it is about 5x better than 2018 subaru forester she looked at, and the price difference was about 10 k, it even has apple carplay and android play which you dont get the subaru!
@@SantanKGhey1234 An intelligent engineer thinks to simplify things, an insecure mediocre engineer find ways to make things more complicated than it should be......
I get calcium buildup on my coffee maker. If you're not using distilled water, the IC is going to begin to have the same problem. Owners will have to clean the IC with vinegar.
You coffee maker boils water, this intercooler sprayer only relies on evaporative cooling. The rate of calcium buildup if any will be significantly less on your intercooler.
@@kellygordon103 The sprinkler bubblers in my yard in AZ has a tremendous amount of calcium build up. I have to often chip it off with a screwdriver. Note: the water is NOT boiled.
Anyone who owns a WRX STI and is thinking of modding it, would be wise to take notes on what Subaru Technica International did to get the S209 up to 341 HP and follow their lead.
hot water is actually more effective. it is already closer to being heated to steam and steam relases the most amount of heat energy. Ice would be used in a water to air intercooler system.
Did this 20 years ago on my old MR2 TURBO, Washer bottle from a old car, Best mod was Water/ethanol injection pre intercooler, and you don't have to worry about freezing.
A lot of ppl will change the wiper washer system and divert it to their intercooler mate!! :D . Water injection for I/C cooling was used by subaru before 2004 outside US (16 years ago i sold my 22B it had I/C Water Spray)
Lead was not in Flint water, but it came frome old pipes in your home. What Flint did wrong was not adding water treatment to reduce lead leaching from your homes lead soldered pipes. The Rea issue is home owners need 5o remove the old lead pipes from there homes and buildings. Glints water starts out with no lead, but your old homes old plumbing adds the lead...
@@airgliderz no this is wrong. Flint changed water supplies from Lake Huron to the Flint River to save money. The water from the river was much more corrosive and leeched lead from the city's water infrastructure which consisted of a lot of lead pipes. People got sick and the people in charge ignored them for as long as they could get away with it.
@@Fungii001 correct exactly what I allready stated, old lead pipes caused issue, water not being treated with basically fertizer for anti carrisuon to help prevent lead f t pm leaching from old homes plumbing, you can again it was not the water it was Jones an buildings old plumbing as the source of lead, but common in many cities....
Very nice! It is satisfying to see some wrongs made right for us American car enthusiasts. We finally get the Honda Civic Type R, which I bought and LOVE and now Subaru gives us the STI S209 which I can't get but I am glad my fellow enthusiasts over here are have the ability to buy one. As some people push for more EVs it is awesome to see we are still getting some of the best engineered internal combustion engine cars ever made! These cars will go down as modern day classics.
@@bespinoza66 the Evo has been dead since 2015... And if that's not bad enough, they brought back the Eclipse but made it an SUV. And no, I'm not making this up
This is a fitting swan-song for the FA chassis STI. I'm excited to see what the next generation brings. Subaru's recent commitment and success in endurance racing should make for an amazing next generation road car.
My 2002 GDA Bugeye WRX also uses water spray over the top mount intercooler. I did this myself and the dyno test proves its worth. Was 196 Kw, now 209Kw. I ran a small copper tube with 9 x 0.5 mm holes drilled, it sprays the water over the whole intercooler. The system uses a 3.5 litre bottle with a window washer pump and the copper tube has a water return for the unused water. The water lasts for a full 12 hours constant driving so I only have to fill it once a week in most cases.
16 years and and an additional 41 HP .. so that's about 2.5HP increase per year. Awesome job Subaru! Love the videos Jason, BTW - keep up the great work.
Intercooler water spray was a feature of WRX RA sedans going all the way back to 1993. There were even two modes of operation: automatic, at high boost levels, and manual, so you could dose the intercooler whenever you wanted. From memory, the sprayer system had a tank in the trunk. Most of those cars got the DCCD, too - the Driver Controlled Center Differential, where you could manually direct more power to the rear. Nice cars they were, too: very simple, very light, and very quick! I think you will find that the cooling offered by the water spray is not mostly from evaporative cooling, it's from heating the water as it gets blasted through the IC by the oncoming rush of air. Not much of it evaporates while it's in contact with the IC, but rather, it evaporates when it hits hot engine parts underneath the IC. Ideally, you would spray a very fine mist into the inlet of the cooler, from multiple spray units, in such small droplets that it all evaporated before it reached the Intercooler itself, lowering the temperature of the inbound air. But such fine jets would be very difficult to maintain.
@@Fantastika AE92 and AE101 Corolla Levin GT-Z. There was a Sprinter Trueno version of both too. I had the first AE92 version, still had the big port head, unfortunately.
That car is one of the reasons I like Subaru. They take all their engineering know how and put into a one off special car. So, for those of us that want that kind of exclusivity. We can have it with a Subaru. (:
Anybody else feeling like this is exceptionally underwhelming engineering? Subaru just effectively pointed the windshield washers down at the intercooler and builds 200 cars...?
What's even more underwhelming is that they were doing this back in 04. I always thought it was a bit gimmicky, but still cool. They stopped doing it, just to bring it back over a decade later as this "new" feature only for this super-limited model.
Old, and proven. It is by no means a 'perfect' engine but they have tweaked and improved it over the years and it is a known entity. Whatever they were to replace it with would be relatively untested and would probably take a few years to get up to the same level of reliability and trust that they've developed with the older EJ series. Though I do wonder if they have other reasons as well, maybe technical or legal reasons.
Still using old EJ's in a 2020 model year vehicle? Why not use the FA motor? Or better yet if Subaru wants real power why not make it a flat 6 instead of flat 4? 3.6L flat 6 twin turbo 500hp, will make the WRX STI basically a front engine Porsche 911!
Ya know, I have a 5th gen Legacy with the 3.6 and thought the same. From what I was able to find, the 3.6 (Subaru's version) internals just aren't made for boost (within reasonable pricing). The 4th gens 3.0 is a far better platform for performance and boost from what I could dig up (this was a while back, so I don't have any solid references, I was also trawling forums, so take that for what it is).
@@dodecahedron1 no it isn't. It is a little over half an inch longer than an EJ25 due to the fact one is chain and the other is belt driven. People have swapped and boosted the flat six blocks into Imprezas. It is not at all a big engine.
I'm just waiting to see the guys at track day who have removed that "fill half-way" tank and replaced it with an ice chest strapped into their trunk, wrapped in aluiminum foil with a custom fitting plugged into that watter line routed to the sprayer!!! Git'r done!!!
I had an 07 STi - so happy to see that there is a reasonable way to use the new IC spray system vs having to reach down and push a button on the dash to the left of the steering column.
Not that I'm suggesting this...but what kinds of numbers can we expect if you filled the water tank with liquid nitrogen? Granted, it may make the plastic tank fracture, the pump may not handle the liquid and the rubber/plastic lines and nozzles may not spray it but let's just say for a mental experiment...what are we looking for with that? Let's run some numbers. Great review and explanation of this new Subie. Had a bug-eye years ago and would love to have another one sometime.
Much, much more effective. But yeah, a challenge to implement. Nitrogen exists as a liquid at like -200 deg C, so if you're spraying -200 deg C liquid, obviously the cooling effect on the intake charge will be significant.
@@fersunk I would figure it would probably do damage all along the way. Maybe just put some dry ice in a mesh bag in front of the intercooler. Somewhat like they do in F1 to cool the cars down. Wouldn't be intermittent though.
If it was possible and practical, i think the intercooler would be clogged up by ice on the inside and slowly stop the flow of air. The car will also start to activate cold engine choke at some point giving you less power. If the right temperature balance is found and if the engine would otherwise knock or overheat and if more fuel can be added to go with the denser colder air, you will get more then just 5-10 hp in a car like this.
It's a fine looking automobile indeed, with the exception of the 'Fast and the Furious' wing. I always enjoy your well thought out and informative videos. Keep up the great work!
Nothing new here had a v7 WRX STI with a factory IC spray that worked automatically or could be turned off and only work off a switch. Why the big deal about this old tech?
Yes they blow head gaskets bad because the blocks are almost completely open. You can buy closed deck blocks and them have them o ringed or a company called IAG does what they call a fire lock treatment to the block which allows the block and head to seal much the way diesel engines do. It's all quite expensive though.
I am an Evo owner and I love this new Subie. It is going to be very collectable in a few years. Eventually when I decided to get a new ride it's going to be a Subaru STI closes thing to an Evo.
true, but Subaru has has water sprayers on the intercooler for 25 years now. Its not something they just decided to do but rather more of a heritage thing or they like living in the past.
It's nice to see a meaningful increase in power output from the WRX STi, even if it is in the form of a low-production run special edition. On a side note, if it were my car, I would use distilled or deionized water to refill the intercooler spray reservoir to reduce the risk of scale formation.
I'd love it if you did one of these on the VW 1.0 TSI like the one used in the UP GTI - loads of cool stuff going on, re 3 cylinder timing (no balancing weights apparently), charge cooling integrated into a plastic intake manifold, electric wastegate, exhaust manifold integrated into the block, petrol particle filter, two coolant circuits for the engine (one for the head, one for the block), high pressure direct injection(sort of like a diesel), sodium filled valves. It's a very interesting little engine.
This is a cool feature even though realistically your not going to notice. Sounds like subaru have over enginered this engine for only a 10% gain in power. This engine with forged internals will take insane boost levels. It's almost as if subaru expect it! Shame we don't get this in the uk
It doesn’t use actual water injection, which is when a water/methanol mix is injected into the charge pipes, but simply sprays the inter cooler, which improves the thermal efficiency of the intercooler.
I like the video, but there is one thing wrong. It’s not the most powerful Subaru ever made, Subaru released a more powerful version of the current STI called the diamond edition, it’s limited like the S209 and only sold in one country. So the diamond edition STI is the most powerful production Subaru to this date.
Oh my, looks like you're correct! Here's what Subaru's headline for the press release says: "SUBARU TECNICA INTERNATIONAL UNLEASHES MOST POWERFUL MODEL EVER WITH LIMITED-EDITION STI S209" So... I'm not sure where the claim is from, but I believe it means STI made it, versus the South Africa team? Not sure haha, thanks for pointing this out! Edit: Here's the link - media.subaru.com/pressrelease/1388/1/subaru-tecnica-international-unleashes-most-powerful-model-ever
South Africa only - 345hp. Japan had the tc380 in December 2018 - a special developed with Arai, their rally driver and HKS tuning - had 380hp, 43/50 sold in around 45 minutes.
Sorry Jason but the only positive thing about this I believe is nitrous modding that button and get a real kick out of it!! Also gonna put that forged internals to the test!!!
Be careful how much power you put into it. You don't want to experience the numerous complaints that resulted from the similarly numbered ED-209 machine, created by Omni Consumer Products for OCP in Detroit originally.😎
Ok, so Subaru says to only use pure water (distilled and/or filtered I assume) but I'm curious from an engineering standpoint. What difference would something else make in how much it could affect the cooling rate. My first thought was use "winter" rated windshield washer fluid - because the alcohol content would prevent freezing, but then I was wondering how much of a difference using alcohol based fluid would make (assuming all other factors are the same). Side note: I went to a local autocross event years ago, and even got to ride along on one run. The driver had installed a similar setup on her STi using a 2nd windshield washer tank/pump/nozzles, and used washer fluid because "it felt faster than using regular water for cooling the intercooler. If you (or anyone else) has some science to drop on me, I'm definitely curious! Spray water vs spray something else (eg windshield washer fluid) for enhanced cooling?
vodka doesnt burn that good. and it doesn't burn long enough to ignite whatever is around it. But when it burns it creates heat that we obviously don't want. So there is no risk to the car, just a "will it work" risk. So I think someone should just try it XD
I put windshield washer fluid in my 05 for i/c spray. I also live in Maine and it gets chilly here and I don’t want it to freeze even if it won’t hurt it.
Great video as usual. I would love to see a video going more in depth on the forged internals and how they compare to what is currently available, like say an IAG Stage 1 or 2.
Love subies. Have 2 but wtf is this Subaru?? Same EJ and small horsepower upgrade. GTFO with that and release the new generation already with a different motor.
@sneeky7 4G63 was reliable AF so I could see why people got mad. "IF aint broke, dont fix it", but the EJ has proven itself not reliable and cant hold power on stock internals. At least the 4G63 replacement (4B11) was a good reliable motor. Every manufacturer has a weak spot. Subaru has amazing STI tranny but the EJ has to go.
relax dude there's only going to be 200ish of them. The S-line subies are for track people and collectors. If anything, this model should be good news to you, as it is the last hurrah before the new platform comes out. Its US market presence, unlike the S208 or S207 signals the end of its production cycle.
How's the Evo doing these days? Haha, I'm messing with you, but it's also kinda silly to bring up "who had what feature first." Should we shame all the companies that use turbos because Oldsmobile did it in the 60's?
not only did the gc8 sti ra had them. there were plenty of subarus back in the 90s, which had this feature across all markets. legacy gtb and some standard impreza wrx models in japan are just some to mention
@@EngineeringExplained It's not even that the water jets' feature should be anything to brag about, as I'm sure it wasn't hard to engineer and implement. It's just the fact that they are using the water jets as such a big selling point when they should really be bragging about the forged internals, aero, etc that the car possesses
You could put super chill ethanol or methanol which both freezing point are around -100C. And you could possibly have flames thrower as a bonus. Win-win situation in my book.
my buddy got an EVO 8 brand new off the showroom floor when they first launched, and it came with the Intercooler Spray option. It's a neat novelty item, but yeah, not something you "feel" when you use it.
You have to give it to Subaru they will not let the EJ die. Which is fine by me... The aftermarket has proved them to be a capable design when the right combo of parts are thrown at it. Thanks for the prompt video Jason.
The idea is that it can be used for 1 or 2 hot laps, not intended for everyday driving. Its really going to be more useful for cooling the IC after a few laps to keep heat soak from hurting performance on track days. The bonus power is a side effect of what is really intended to fix the inherent issues with a top-mount IC.
Just to be clear, the water isn't being sprayed directly onto the intercooler. Based on the pictures you showed it looks like the water is being sprayed into the airstream through the scoop. I would guess that having water jets pointed right at the aluminum intercooler could potentially lead to corrosion issues down the line. Hence why Subaru just squirts it into the airstream, allowing it to better vaporize and cover more of the intercooler in a less direct manner.
A friend added this to his WRX rally car after i put it on my B4, we saw intake temperatures dropping from 70 deg C down to around ambient (in this case around 30 deg C) on the WRX. A difference of 40 degrees, which is noticeable on hot days or if you're driving hard.
@@danieljensen2626 no he's saying that a heavier car with a more powerful engine is still getting better mpg than the STI. So STI isn't as efficient as these other cars.
Great job on your video, but it is ridiculous to call this special just because of a lame water spray gimmick and some tasteless aero. What is going on with Japanese automakers, nothing but let downs left and a right. I'm sure the so called supra will be a great performer, but they should have called it something else. There's nothing Supra about. If anything, it does look like a higher trim BRZ.
Your wrong. It is clearly not a gimmick. It is proven reliable technolgy used succsessfully since WW2. The only gimmick is your incorrect comment... LOL
@@equiman85 No, I again your wrong. By your measure turbos, multi valves, superchargers, performance intakes, and performance parts, performance cams and nitro is old tech you won't and don't use cause it's a gimmick and to old for you. Water injection is proven reliable affordable technology that works very well.
You call it 2ater injection but it's better called an intercooler spray. They're quite different. I've got an IC sprayer on my 2003 Evo 8, it's not amazing. I later installed water injection which is actually much more effective.
That's so cool, I wish this was a regular stock production sti. I would buy one sadly I probably wont be one of the 200 that get this car but that won't stop me from buying a regular one.
I dont know how you can say water spray is a cool thing? Really? Engineers should focus on how to develop a better cooling system to keep the temperatures down and not do a "DIY HACK" by spraying water on it. "Its cool "..when you are in high school and dont know any better.
So I’m not sure if adding the ice water is an improvement for cooling. As far as my understanding you have more delta T if you have water that is at a temperature right about to vaporize. The state change is a jump in loss of heat as opposed to conducting heat away with a cold fluid. This is what is said about evaporative coolers that they are actually less efficient with ice water. That said those are normal hot temperatures and does not take into account the very hot air to air radiator and good conduction of the Inter cooler. Maybe you could do a video calculating this. I’d be really interested.
More or Less, I dont think it is for pure power production, but rather to prevent heat soaking the intercooler. or helping combat it. Out drag racing and long autox days we had to ice down our air to air intercoolers and this is sort of a way to help return temps to "normal" if it gets hot. that's what i beleive its for.
I made my own IC sprayer a couple of years ago. Helps in the hot summer days. Routed the tank inside the car so it doesn't freeze so easily in sub temps. Some people do cryo spray on the IC which is even more efficient. I don't agree with Subarus placement of the IC above the engine though. Warm air rises and temps inside the Engine bay are extremly high often 85C. So I do not understand why the persist with this. Lag due to longer routing is pretty insignificant imo. Btw. if you want Cold water handy at all times you can install a mini fridge in the car and keep some bottles of water in there :p
well subaru seems to like the IC placement above the engine because of the forced air scoop on the hood. Plus it simplifies/shortens the intake and exhaust tubing, meaning saving money in mass production.
I think this is more a thing for when the car is driven at low speed but high load (like rally), to prevent the engine from cooking the intercooler and the air in it. The reaction will also be delayed, because the spray needs to cool the intercooler and the air in it, i am guessing, but i dont think it is possible to lower the temperature by 10 degrees, in less then 10 seconds, so you will not get the "NOS" feeling when pushing the button.
The horse power and torque are not as high as you think. At the crank its 341 hp @6000 , but at the wheel its still like 220 to 250 hp.... manufactures like to polish up the specs ... STI and WRX both usually dyno at 220 range...
![[UA] NAVI vs MOUZ | BO5 | IEM Rio 2024](http://i.ytimg.com/vi/CMBYk0cbGoA/mqdefault.jpg)
Subaru says "around 200" will be made. Why not just declare it at 209?! Hope everyone's having a wonderful day, thanks for watching! I'm hopeful to get to test out one of these rare machines; in the meantime, here's my review of the $50,000 Subaru STI Type RA: ua-cam.com/video/N71CY9M4ZnE/v-deo.html
They may sacrifice too many for NCAP testing?
Why can't we have opposing cylinders firing at the same time? Obviously boxer and V configuration engines are the ones I mean. I presume that timing the detonation might be the problem, but surely there's a way around this? I would expect the torque and BHP figures to improve hugely. I must be forgetting something simple that prevents this being a simple way to increase performance... :-)
@@James-oo1yq Vibration. You go from having four 120-ish degree power strokes per 720 degree cycle (480 degrees of power stroke, so 60 degrees at a time without power at a higher, smoother frequency) to two (240 degrees of power stroke, with two 240 degree gaps) Effectively you have a well balanced two cylinder engine.
It would also sound like ass and break gearboxes like there's no tomorrow
I'm guessing that it's gonna bd one of those cars where each individual car's power output varies a bit. So they don't want to have something to stick to.
Maybe they were also counting the prototypes
Mom: Hurry up we gotta go!
Me: HOLD ON MOM I GOTTA WATER MY STI
Everyone who drives an STI lives with they're mom still 😎
I own a wrx and live with my mom lol
My best mate has a 2013 club spec sti and lives with his parents still. That's how he could afford to buy a club spec sti. But his mum doesn't drive him around like Zac Ashs' mum.
I support a family of 4 and owned one. To be fair though, I did end up selling it to get a car with more clearance.
@@vashusan1984 but lifted is cool too, just deck it out like a safari rally car
Friend, "Ooo...Fiji water. My favorite."
Me, "PUT IT DOWN! THAT'S FOR THE SUBARU! Here, drink this bottle of tap water from my kitchen."
Lmfaooo
this is hilarious 😂
Whats the difference lol
Hahahaha imagine saying that to a lady friend/wife
Lmfao 🤣🤣🤣
PV=NRT
So it's like methanol injection but externally onto the intercooler. Should be fun to press the button!
Ideal Gas Law 👌
But it’s really not a new feature for STIs, my 2007 STI has a Intercooler Spray that can be activated with the press of a button 🤔
@@Rs13ken yeah but this button is a paddle on the steering wheel, it's at least 5 times cooler
Hai .....
Why not just put a bigger intercooler ? People don't check their oil level, so now Subaru execs think they will be checking water level ?
Makes sense, if the drivers vape, why not let the Subaru vape, too...
MadIIMike 😂
Where this thing came from? It seems to be very popular joke, but I don't vape and don't know any other Subaru owner that vapes
ElMosqito its from a youtube channel called muscle vs tuner
@@63JackBlack But why they think about it?
ElMosqito because where I live all these frat punks drive WRX’s around, vaping thinking there the coolest things out there lol. Those are the same idiots that think they are Rally drivers and wrap there cars around trees...
Awesome explanation Jason! This is the coolest thing that Subaru has done in years! Thank you for the shout out as well!
Quite cool! Thanks for sending some clips over! :)
Rumor has it Matt is a Subaru WRX fan...
With water being sprayed on the intercooler, I'd say that's a accurate statement.
My 2004 Sti has a I/c water sprayer. Forged motor is awesome tho
You mean water cool right
"keep the tank half-full for the optimists out there" lmaoooo
hahahhaha waiting for someone to say half empty
Reminded me of this:
Pessimist: the glass is half empty.
Optimist: the glass is half full.
Engineer: the glass is twice as big as it needs to be.
@@kenkalajdzic Feminist: the glass is raping me
Milennials: that glass offends me XD
@@kenkalajdzic Physicist: the glass is 99% empty space.
The EJ25 motor is indeed old, but the fact they installed forged internals is game changer. With a flex fuel kit and upgraded injectors, I could see this platform making north of 400whp easy. Little pricey but since it's a limited edition, they get away with it.
you would think that every boosted engine would get forged internals since its running on boost, heck honda s2000 but forget internals in their engines even though the engine was N/A, kind of shows that subaru are just cheap
Alex Nichols I think Subaru should just stick to making granny mobiles at this point. They literally ignore everything their very large and loyal community asks and keep pushing this garbage on us. I understand it’s forged internals and that’s better suited towards aftermarket upgrades. But you can literally bolt all this onto a 14-15 model sti and be thousands cheaper than they’ll try to sell this money grabbing scheme for.
vr43000gtkid thats what happens when the company gets too greedy, they know people will buy it so they charge 60+ k for an sti thats just slightly modded, i can put 4 k into my 2013 civic si and blow the doors off of this one, i would actually buy a just basic wrx over this one and still have 30+k in my pocket! But yes you are right
Alex Nichols I agree 100% it’s truly a shame when Hyundai is doing a better job at making a car oriented towards the performance community than all the big dogs.
vr43000gtkid you are right, my neighbor bought a 2018 Hyundai tucson fully loaded, it is about 5x better than 2018 subaru forester she looked at, and the price difference was about 10 k, it even has apple carplay and android play which you dont get the subaru!
So Subaru installed the windscreen sprayers on the wrong side of the hood and call it a performance upgrade. 🤣
Eduard van Raalte however you want to look at it, it's simple and smart.
Carlos Yes, I agree. Actually I have thought of doing the exact same thing.
Your comment is probably why you are not intelligent enough to be an engineer
@@SantanKGhey1234 An intelligent engineer thinks to simplify things, an insecure mediocre engineer find ways to make things more complicated than it should be......
Lmao
Even this has more HP than the bmw Zupra. 🤔😧😐🤦🏻♂️✌🏼
Haha, I too found it ironic that the Subaru STI of all cars debuted with more power than the Supra at Detroit.
@@EngineeringExplained Supra? BMW-BRZ
@@brich8608 BMW-BRZ? It's a BMZ! lol
@@stefan-alinspeteanu9572 Brian likes this!
@@stefan-alinspeteanu9572 How about the BR-Z4?
The most powerful STI ever....
......we still talking about cars right?
"Yo dude, I just got a STI last night..."
Ha. Ha..
Mitsubishi, because girls like diamonds, not STI's
@@skippy2987 That's a good one man hahaha
It burns and itches the harder I push
I get calcium buildup on my coffee maker. If you're not using distilled water, the IC is going to begin to have the same problem. Owners will have to clean the IC with vinegar.
Just run some vinegar through the water tank?
I'm sure that will have no repercussions.
You have the perfect name for your car, too: "Pickles"
just put vinegar in the tank lol
You coffee maker boils water, this intercooler sprayer only relies on evaporative cooling. The rate of calcium buildup if any will be significantly less on your intercooler.
@@kellygordon103 The sprinkler bubblers in my yard in AZ has a tremendous amount of calcium build up. I have to often chip it off with a screwdriver. Note: the water is NOT boiled.
@@jerryrounds8586 AZ gets hot as hell, you sure it ain't boiling? Lol.
I designed a similar sprayer for my 91 Ecplise GSX way back in 2004. Never got around to building it. :(
Water spray for more power with a steering wheel button for activation is always cool
I’m still waiting for Soulja Boy’s tech company to develop their own car engine
Maybe Toyota will put it in the MK VI Supra.
It's going to be a Tesla Killer
The Soulja Whip will be the most dope
I have a feeling that it is going to be inspired by an accomplished crate engine.
Wondering if this is a serious post, didn't realized he had a tech co.
Anyone who owns a WRX STI and is thinking of modding it, would be wise to take notes on what Subaru Technica International did to get the S209 up to 341 HP and follow their lead.
OH, I can see people putting ICE CUBES in that trunk tank already!
ICE ICE BABY....
My06 had ice in it all the time
hot water is actually more effective. it is already closer to being heated to steam and steam relases the most amount of heat energy. Ice would be used in a water to air intercooler system.
Formula Firebird better idea is warm water. Best idea is methanol. Basically, throw windshield washer fluid in there.
Did this 20 years ago on my old MR2 TURBO, Washer bottle from a old car, Best mod was Water/ethanol injection pre intercooler, and you don't have to worry about freezing.
A lot of ppl will change the wiper washer system and divert it to their intercooler mate!! :D . Water injection for I/C cooling was used by subaru before 2004 outside US (16 years ago i sold my 22B it had I/C Water Spray)
w..what did you do 16 years ago???
@@gernyiblazs left japan :(
M Hafez dude u sold ur 22b ... im shocked
@@mhafez2052 Still a questionable decision... Nah.. of course I'm not serious. I'm not in a position to judge you. :)
I am sorry for your loss.
The WRX is a classic car. take me back to the late 90's with the WRX and EVO were going head to head. Great time to see two car companies going for it
I'd advise against using Flint Michigan water.
Lead was not in Flint water, but it came frome old pipes in your home. What Flint did wrong was not adding water treatment to reduce lead leaching from your homes lead soldered pipes. The Rea issue is home owners need 5o remove the old lead pipes from there homes and buildings. Glints water starts out with no lead, but your old homes old plumbing adds the lead...
@@airgliderz I'd advise against using Flint Michigan water.
@@airgliderz no this is wrong. Flint changed water supplies from Lake Huron to the Flint River to save money. The water from the river was much more corrosive and leeched lead from the city's water infrastructure which consisted of a lot of lead pipes. People got sick and the people in charge ignored them for as long as they could get away with it.
@@Fungii001 correct exactly what I allready stated, old lead pipes caused issue, water not being treated with basically fertizer for anti carrisuon to help prevent lead f t pm leaching from old homes plumbing, you can again it was not the water it was Jones an buildings old plumbing as the source of lead, but common in many cities....
Wrong it adds HP
Very nice! It is satisfying to see some wrongs made right for us American car enthusiasts. We finally get the Honda Civic Type R, which I bought and LOVE and now Subaru gives us the STI S209 which I can't get but I am glad my fellow enthusiasts over here are have the ability to buy one. As some people push for more EVs it is awesome to see we are still getting some of the best engineered internal combustion engine cars ever made! These cars will go down as modern day classics.
Damn you Mitsubishi, you can go to hell for removing yourself from competition
I haven't kept up with them. Nothing interesting with the EVO?
didnt you hear? mitsubishi is back! at least if you were talking about forza.
@@bespinoza66 the Evo has been dead since 2015... And if that's not bad enough, they brought back the Eclipse but made it an SUV. And no, I'm not making this up
@@josiahkaufman393 fail lol
@@josiahkaufman393 Yeah, how tf could you name such an iconic car to be a completely different chassis; SUV?!
This is a fitting swan-song for the FA chassis STI. I'm excited to see what the next generation brings. Subaru's recent commitment and success in endurance racing should make for an amazing next generation road car.
*when your water tank has more displacement than your engine*
To be fair, so does your fuel tank.
My 2002 GDA Bugeye WRX also uses water spray over the top mount intercooler. I did this myself and the dyno test proves its worth. Was 196 Kw, now 209Kw.
I ran a small copper tube with 9 x 0.5 mm holes drilled, it sprays the water over the whole intercooler. The system uses a 3.5 litre bottle with a window washer pump and the copper tube has a water return for the unused water. The water lasts for a full 12 hours constant driving so I only have to fill it once a week in most cases.
16 years and and an additional 41 HP .. so that's about 2.5HP increase per year. Awesome job Subaru! Love the videos Jason, BTW - keep up the great work.
Intercooler water spray was a feature of WRX RA sedans going all the way back to 1993. There were even two modes of operation: automatic, at high boost levels, and manual, so you could dose the intercooler whenever you wanted. From memory, the sprayer system had a tank in the trunk. Most of those cars got the DCCD, too - the Driver Controlled Center Differential, where you could manually direct more power to the rear. Nice cars they were, too: very simple, very light, and very quick!
I think you will find that the cooling offered by the water spray is not mostly from evaporative cooling, it's from heating the water as it gets blasted through the IC by the oncoming rush of air. Not much of it evaporates while it's in contact with the IC, but rather, it evaporates when it hits hot engine parts underneath the IC. Ideally, you would spray a very fine mist into the inlet of the cooler, from multiple spray units, in such small droplets that it all evaporated before it reached the Intercooler itself, lowering the temperature of the inbound air. But such fine jets would be very difficult to maintain.
*But nothing can beat the **_Toyota Corolla_*
Praise be!
Bullshit. I beat a Corolla once*
*with my factory supercharged Corolla Coupe.
@@skippy2987 since when does that exist
@@Fantastika AE92 and AE101 Corolla Levin GT-Z. There was a Sprinter Trueno version of both too. I had the first AE92 version, still had the big port head, unfortunately.
@@skippy2987 alright wataru
That car is one of the reasons I like Subaru. They take all their engineering know how and put into a one off special car. So, for those of us that want that kind of exclusivity. We can have it with a Subaru. (:
Anybody else feeling like this is exceptionally underwhelming engineering? Subaru just effectively pointed the windshield washers down at the intercooler and builds 200 cars...?
Jake Gallo knowing that the refresh is happening in the next couple of years do you expect this 60k car to have a large production?
What's even more underwhelming is that they were doing this back in 04. I always thought it was a bit gimmicky, but still cool. They stopped doing it, just to bring it back over a decade later as this "new" feature only for this super-limited model.
Didn't do anything in 04, won't do anything now.
Forged pistons/rods bigger HKS turbo. Better intake manifolds. Better exhaust. Not just IC spray.
I made an intercooler sprayer for my 15 wrx. It made a noticeable difference on the butt dyno. Cool they brought this back
This is your standard comment in subaru videos:
"Ej25 is so old ditch it already"
To be fair my 11 year old beater has the same EJ25, except rated at 175 hp and I'm sure by now many of those horses have left the stable.
its true though
Old, and proven.
It is by no means a 'perfect' engine but they have tweaked and improved it over the years and it is a known entity. Whatever they were to replace it with would be relatively untested and would probably take a few years to get up to the same level of reliability and trust that they've developed with the older EJ series.
Though I do wonder if they have other reasons as well, maybe technical or legal reasons.
Wow wow. Don’t make Subaru partner up With bmw 😂
lol yes and on mitsubishi side it's the opposite with ppl saying "when a evo was a evo" because the evo x doesn't come with the 4G
Thank you! I really enjoyed the explanation. I enjoy driving the EJ engine, a lot. Its unique sound refills my soul every time.
Still using old EJ's in a 2020 model year vehicle? Why not use the FA motor? Or better yet if Subaru wants real power why not make it a flat 6 instead of flat 4? 3.6L flat 6 twin turbo 500hp, will make the WRX STI basically a front engine Porsche 911!
This is my train of thought. Make it a legitimate sports car and take the 3.6L and put some turbos on it.
who’s gonna pay for that? 70k for a subaru i don’t think so
@@m.h.3679 and how do you get 70K?
Ya know, I have a 5th gen Legacy with the 3.6 and thought the same. From what I was able to find, the 3.6 (Subaru's version) internals just aren't made for boost (within reasonable pricing).
The 4th gens 3.0 is a far better platform for performance and boost from what I could dig up (this was a while back, so I don't have any solid references, I was also trawling forums, so take that for what it is).
@@dodecahedron1 no it isn't. It is a little over half an inch longer than an EJ25 due to the fact one is chain and the other is belt driven. People have swapped and boosted the flat six blocks into Imprezas. It is not at all a big engine.
As usual, extremely well presented.
Simple, accurate and insightful.
I'm just waiting to see the guys at track day who have removed that "fill half-way" tank and replaced it with an ice chest strapped into their trunk, wrapped in aluiminum foil with a custom fitting plugged into that watter line routed to the sprayer!!! Git'r done!!!
Hahaha, yes!
Why do I feel like Clarkson did that on the Grand Tour lmao
I had an 07 STi - so happy to see that there is a reasonable way to use the new IC spray system vs having to reach down and push a button on the dash to the left of the steering column.
Yours was not automatic?
Not that I'm suggesting this...but what kinds of numbers can we expect if you filled the water tank with liquid nitrogen? Granted, it may make the plastic tank fracture, the pump may not handle the liquid and the rubber/plastic lines and nozzles may not spray it but let's just say for a mental experiment...what are we looking for with that? Let's run some numbers. Great review and explanation of this new Subie. Had a bug-eye years ago and would love to have another one sometime.
Much, much more effective. But yeah, a challenge to implement. Nitrogen exists as a liquid at like -200 deg C, so if you're spraying -200 deg C liquid, obviously the cooling effect on the intake charge will be significant.
The only thing that we don't know would be the thermal shock from hot to N2 temps.
May develop cracks in the intercooler
@@fersunk I would figure it would probably do damage all along the way. Maybe just put some dry ice in a mesh bag in front of the intercooler. Somewhat like they do in F1 to cool the cars down. Wouldn't be intermittent though.
If it was possible and practical, i think the intercooler would be clogged up by ice on the inside and slowly stop the flow of air. The car will also start to activate cold engine choke at some point giving you less power.
If the right temperature balance is found and if the engine would otherwise knock or overheat and if more fuel can be added to go with the denser colder air, you will get more then just 5-10 hp in a car like this.
Probably gona freeze the rubber lines and water pump before it even hits the intercooler
It's a fine looking automobile indeed, with the exception of the 'Fast and the Furious' wing. I always enjoy your well thought out and informative videos. Keep up the great work!
Nothing new here had a v7 WRX STI with a factory IC spray that worked automatically or could be turned off and only work off a switch. Why the big deal about this old tech?
I put my own home made intercooler sprayer in my 2015 WRX. Helps a lot with heat soak during hot weather.
make a forged head gasket so it doesn't blow every 5 min.
Josip Fabijančić-gamingkanal haven’t heard of Sti’s blowing headgaskets?
@@joshr8680 weird...
anyway, still needs better headgasket
or do away with gasket and have titanium bolts and jam it tight lol
@@bencrosbie yes, over 9000lbs of torque
Yes they blow head gaskets bad because the blocks are almost completely open. You can buy closed deck blocks and them have them o ringed or a company called IAG does what they call a fire lock treatment to the block which allows the block and head to seal much the way diesel engines do. It's all quite expensive though.
I am an Evo owner and I love this new Subie. It is going to be very collectable in a few years. Eventually when I decided to get a new ride it's going to be a Subaru STI closes thing to an Evo.
BMW's M4 GTS Water Injection system is a much better system, Subaru's Water Sprayed Intercooler looks absolutely gimmicky in comparison.
Cost of M4 Vs cost of sti
@@paullester9266 it's like common sense doesn't apply.
true, but Subaru has has water sprayers on the intercooler for 25 years now. Its not something they just decided to do but rather more of a heritage thing or they like living in the past.
It's nice to see a meaningful increase in power output from the WRX STi, even if it is in the form of a low-production run special edition.
On a side note, if it were my car, I would use distilled or deionized water to refill the intercooler spray reservoir to reduce the risk of scale formation.
I'd love it if you did one of these on the VW 1.0 TSI like the one used in the UP GTI - loads of cool stuff going on, re 3 cylinder timing (no balancing weights apparently), charge cooling integrated into a plastic intake manifold, electric wastegate, exhaust manifold integrated into the block, petrol particle filter, two coolant circuits for the engine (one for the head, one for the block), high pressure direct injection(sort of like a diesel), sodium filled valves. It's a very interesting little engine.
Sodium filled valves were already in the STi since 2005.
Well done with the analysis! Thanks for posting the video! Really enjoy learning from an engineer’s point of view.
it should be hella fast then, to do the nurburgring in 5.5 minutes LOL
No doubt!
I had a setup like this on my srt4. That was in 2004 , and at the same time it sprayed methanol / water mix into the engine.
This is a cool feature even though realistically your not going to notice. Sounds like subaru have over enginered this engine for only a 10% gain in power. This engine with forged internals will take insane boost levels. It's almost as if subaru expect it! Shame we don't get this in the uk
Big truck and rv actually came up to Detroit for the show... just giving you crap. I love your videos, thanks for all you share.
Question: Can I replace the intercooler water with vape juice?
yeah, sounds juicy
No, it would make the engine far too powerful, I personally wouldn't risk it
It doesn’t use actual water injection, which is when a water/methanol mix is injected into the charge pipes, but simply sprays the inter cooler, which improves the thermal efficiency of the intercooler.
I like the video, but there is one thing wrong. It’s not the most powerful Subaru ever made, Subaru released a more powerful version of the current STI called the diamond edition, it’s limited like the S209 and only sold in one country.
So the diamond edition STI is the most powerful production Subaru to this date.
Oh my, looks like you're correct! Here's what Subaru's headline for the press release says: "SUBARU TECNICA INTERNATIONAL UNLEASHES MOST POWERFUL MODEL EVER WITH LIMITED-EDITION STI S209" So... I'm not sure where the claim is from, but I believe it means STI made it, versus the South Africa team? Not sure haha, thanks for pointing this out!
Edit: Here's the link - media.subaru.com/pressrelease/1388/1/subaru-tecnica-international-unleashes-most-powerful-model-ever
Why does everyone forget about the CS400? 395bhp and limited edition just like these.
South Africa only - 345hp. Japan had the tc380 in December 2018 - a special developed with Arai, their rally driver and HKS tuning - had 380hp, 43/50 sold in around 45 minutes.
Great video Jason, thanks for doing this!
Can`t wait to see track numbers. Hopes to be crowned again.
Great video!!
Sorry Jason but the only positive thing about this I believe is nitrous modding that button and get a real kick out of it!! Also gonna put that forged internals to the test!!!
lol my 2001 bugeye sti has a built in watersprayer for the intercooler
according to the manual for the ic, pure water is required for ic performance. Urine can be used if pure water is not available.
So you mean regular STI will run faster in the rain? 🌧
Minh Phan thought the same thing 🤔 wonder if there are any aftermarket thing out there that we can use as that spraying thing lol
or in the winter time?
@@coolbeanz212 All cars will run faster in cold weather (more oxygen in the same volume of air)
..in the fog
I love this cause this just adds to the parts bin for us sti guys
Be careful how much power you put into it. You don't want to experience the numerous complaints that resulted from the similarly numbered ED-209 machine, created by Omni Consumer Products for OCP in Detroit originally.😎
That was awesome
Ok, so Subaru says to only use pure water (distilled and/or filtered I assume) but I'm curious from an engineering standpoint. What difference would something else make in how much it could affect the cooling rate. My first thought was use "winter" rated windshield washer fluid - because the alcohol content would prevent freezing, but then I was wondering how much of a difference using alcohol based fluid would make (assuming all other factors are the same).
Side note: I went to a local autocross event years ago, and even got to ride along on one run. The driver had installed a similar setup on her STi using a 2nd windshield washer tank/pump/nozzles, and used washer fluid because "it felt faster than using regular water for cooling the intercooler.
If you (or anyone else) has some science to drop on me, I'm definitely curious! Spray water vs spray something else (eg windshield washer fluid) for enhanced cooling?
So wait, if you use Vodka in the water tank will it be more efficient?? And shouldn't that fix the freezing problem as well.
YES
Thought to use isopropyl alcohol myself and then you can drink the vodka!
I thought the same thing but then again i'd rather not push a paddle on the steering wheel to set my car on fire :|
Good thinking komrade, in russia vodka powers turbo!
vodka doesnt burn that good. and it doesn't burn long enough to ignite whatever is around it. But when it burns it creates heat that we obviously don't want.
So there is no risk to the car, just a "will it work" risk. So I think someone should just try it XD
I put windshield washer fluid in my 05 for i/c spray. I also live in Maine and it gets chilly here and I don’t want it to freeze even if it won’t hurt it.
Hello from Australia Notification gang
Go back to bed (says I, at 1:45am)
Great video as usual. I would love to see a video going more in depth on the forged internals and how they compare to what is currently available, like say an IAG Stage 1 or 2.
Love subies. Have 2 but wtf is this Subaru?? Same EJ and small horsepower upgrade. GTFO with that and release the new generation already with a different motor.
@sneeky7 4G63 was reliable AF so I could see why people got mad. "IF aint broke, dont fix it", but the EJ has proven itself not reliable and cant hold power on stock internals. At least the 4G63 replacement (4B11) was a good reliable motor. Every manufacturer has a weak spot. Subaru has amazing STI tranny but the EJ has to go.
@@salmanomar97 After going through two EJs myself, I can confirm your point.
relax dude there's only going to be 200ish of them. The S-line subies are for track people and collectors. If anything, this model should be good news to you, as it is the last hurrah before the new platform comes out. Its US market presence, unlike the S208 or S207 signals the end of its production cycle.
Yeah but if they did that you might not have to keep buying head gaskets !
A friend of mine drag races a Vauxhall corsa 2.0 with nearly 700 hp FWD too.
He routed his window jet spray on to his intercooler 💡💡👌🏼
That moment when Evo's have had intercooler water jets/sprayers since 2001 lol. Congrats Subaru
How's the Evo doing these days? Haha, I'm messing with you, but it's also kinda silly to bring up "who had what feature first." Should we shame all the companies that use turbos because Oldsmobile did it in the 60's?
@@EngineeringExplained subaru did that in 90's GC8 STI RA and typeR had that feature. also 22b
not only did the gc8 sti ra had them. there were plenty of subarus back in the 90s, which had this feature across all markets. legacy gtb and some standard impreza wrx models in japan are just some to mention
@@EngineeringExplained It's not even that the water jets' feature should be anything to brag about, as I'm sure it wasn't hard to engineer and implement. It's just the fact that they are using the water jets as such a big selling point when they should really be bragging about the forged internals, aero, etc that the car possesses
Not sure when they started but it must've been before 2001. My evo 4 has this from 1996.
You could put super chill ethanol or methanol which both freezing point are around -100C. And you could possibly have flames thrower as a bonus. Win-win situation in my book.
Needs way more power, it’s behind the times. Many family sedans have more power. Sti engine is outdated!
cloridan Beauchamps
And they discontinued the ford RS lmao.
@@shintehim6261 Only in the US, they're still making ST/RS in Europe.
It's not just about power output.
Asistente UADE True .... But I’ve owned three wrx s one of them was a sti 2008 that had 5 hp less,that’s not much progress.
300zxdriver
That’s not possible unless you mod which doesn’t count.....
my buddy got an EVO 8 brand new off the showroom floor when they first launched, and it came with the Intercooler Spray option. It's a neat novelty item, but yeah, not something you "feel" when you use it.
Any chance you could give the values in metric units as well? kW, Nm and MPa instead of hp, lb-ft, and psi?
at least he gave the celsius
You have to give it to Subaru they will not let the EJ die. Which is fine by me... The aftermarket has proved them to be a capable design when the right combo of parts are thrown at it. Thanks for the prompt video Jason.
5.5 minutes of spray??? That's so little.
im sure there will be an after market tank upgrade
The idea is that it can be used for 1 or 2 hot laps, not intended for everyday driving. Its really going to be more useful for cooling the IC after a few laps to keep heat soak from hurting performance on track days. The bonus power is a side effect of what is really intended to fix the inherent issues with a top-mount IC.
Just to be clear, the water isn't being sprayed directly onto the intercooler. Based on the pictures you showed it looks like the water is being sprayed into the airstream through the scoop. I would guess that having water jets pointed right at the aluminum intercooler could potentially lead to corrosion issues down the line. Hence why Subaru just squirts it into the airstream, allowing it to better vaporize and cover more of the intercooler in a less direct manner.
But did they fix the best parts about Subaru? Head gaskets xD
ShikiKaze yes, for quite some years now it’s been fixed
A friend added this to his WRX rally car after i put it on my B4, we saw intake temperatures dropping from 70 deg C down to around ambient (in this case around 30 deg C) on the WRX. A difference of 40 degrees, which is noticeable on hot days or if you're driving hard.
There are more powerful engines with better gas mileage than the STi motor. And most of these ares are also heavier than the STi. SMH.
Heavier is bad though, did you mean the others are lighter?
@@danieljensen2626 no he's saying that a heavier car with a more powerful engine is still getting better mpg than the STI. So STI isn't as efficient as these other cars.
nobody cares about fuel efficient when driving an sti, your flooring it 80% of the time anyway haha
Yea. But none of these have boxer engine or a Subaru badge.
Now go figure why people are loyal to Subaru.
Not me, enough of head gasket blows and oil leaks. Bye Subaru.
Way back in 1992 I installed a water spray system on the intercooler of my Eagle Talon Turbo. 😊
First view and first coment! Thanks for your videos!
rpg5391 youre third
Thank you for watching!! Seriously, you make it all work out! :)
I would re-route that tank into the cabin like a CamelPak. Thirsty? Hit the spray. Also, vapetank fogger for the interior...so many possibilities
Great job on your video, but it is ridiculous to call this special just because of a lame water spray gimmick and some tasteless aero. What is going on with Japanese automakers, nothing but let downs left and a right. I'm sure the so called supra will be a great performer, but they should have called it something else. There's nothing Supra about. If anything, it does look like a higher trim BRZ.
The newer civic si seems to be a really good car.
Your wrong. It is clearly not a gimmick. It is proven reliable technolgy used succsessfully since WW2. The only gimmick is your incorrect comment... LOL
Always viewed the Supra as a Celica trim level
@@airgliderz exactly, it's dinosaur technology. We are beyond WW2 buddy.
@@equiman85 No, I again your wrong. By your measure turbos, multi valves, superchargers, performance intakes, and performance parts, performance cams and nitro is old tech you won't and don't use cause it's a gimmick and to old for you.
Water injection is proven reliable affordable technology that works very well.
You call it 2ater injection but it's better called an intercooler spray. They're quite different. I've got an IC sprayer on my 2003 Evo 8, it's not amazing. I later installed water injection which is actually much more effective.
340HP in 2019 with a turbo engine is so depressing....in this time you would expect at least 400.
It's called tuner for a reason
From a four cylinder? Name one
Name one 4 cylinder that is pushing 400 and doesn't have atrocious lag.
Yeah, it is only a 2.5L 4 cylinder...
Your expectations are too high. It's like saying to put 300hp engine in an MX-5. The power would overwhelm the rest of the balance of the car
That's so cool, I wish this was a regular stock production sti. I would buy one sadly I probably wont be one of the 200 that get this car but that won't stop me from buying a regular one.
I dont know how you can say water spray is a cool thing? Really?
Engineers should focus on how to develop a better cooling system to keep the temperatures down and not do a "DIY HACK" by spraying water on it.
"Its cool "..when you are in high school and dont know any better.
Yep, still think it's cool, and not a DIY hack... lighten up haha. It's driver engagement, functional, and has been used in the rally world.
No it's brilliant Subaru engineering that is reliable, practical and it's proven to work, win win in all aspects...!
All that tells me is you NEVER drive on track and have no experience about heat management.
This has been brought up in a couple of cars already. The m4 has thin function, a but different but it is there. Nobody is joking around about that.
@@andy01993- Go do some more research dude your lack of knowledge is embarrassing .
Subaru reinventing VTEC, water spraying kicked in bro!!!
Lol only making 200..
"Around 200" so probably 500 if it sells well, 100 if it doesn't
They make 200 because they know if there is going to be a recall at least it's only 200 cars and not 1.5million
So I’m not sure if adding the ice water is an improvement for cooling. As far as my understanding you have more delta T if you have water that is at a temperature right about to vaporize. The state change is a jump in loss of heat as opposed to conducting heat away with a cold fluid. This is what is said about evaporative coolers that they are actually less efficient with ice water. That said those are normal hot temperatures and does not take into account the very hot air to air radiator and good conduction of the Inter cooler. Maybe you could do a video calculating this. I’d be really interested.
More or Less, I dont think it is for pure power production, but rather to prevent heat soaking the intercooler. or helping combat it. Out drag racing and long autox days we had to ice down our air to air intercoolers and this is sort of a way to help return temps to "normal" if it gets hot. that's what i beleive its for.
I made my own IC sprayer a couple of years ago. Helps in the hot summer days. Routed the tank inside the car so it doesn't freeze so easily in sub temps. Some people do cryo spray on the IC which is even more efficient.
I don't agree with Subarus placement of the IC above the engine though. Warm air rises and temps inside the Engine bay are extremly high often 85C. So I do not understand why the persist with this. Lag due to longer routing is pretty insignificant imo.
Btw. if you want Cold water handy at all times you can install a mini fridge in the car and keep some bottles of water in there :p
well subaru seems to like the IC placement above the engine because of the forced air scoop on the hood. Plus it simplifies/shortens the intake and exhaust tubing, meaning saving money in mass production.
I’m picking up one of these as long as it doesn’t go over 90,000 I will happily buy it!! 👍
So the MAF is after the IC? How ECU knows when the driver will spray and he will not. Timing must be edited if it will be too hot or cold.
The ic spray is less about making more power and more about not making less power when approaching efficiency limits of the cooler.
I think this is more a thing for when the car is driven at low speed but high load (like rally), to prevent the engine from cooking the intercooler and the air in it.
The reaction will also be delayed, because the spray needs to cool the intercooler and the air in it, i am guessing, but i dont think it is possible to lower the temperature by 10 degrees, in less then 10 seconds, so you will not get the "NOS" feeling when pushing the button.
The horse power and torque are not as high as you think. At the crank its 341 hp @6000 , but at the wheel its still like 220 to 250 hp.... manufactures like to polish up the specs ... STI and WRX both usually dyno at 220 range...
Oh man they put the spray on a switch - that's a really fun addition.