Subaru STI Injector Install
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- Опубліковано 26 сер 2024
- Not quite sure how to install your injectors? Neither was I so let me make all of the mistakes for you so that you don't have to. We installed a set of Cobb 1050 CC injectors onto my 2017 Subaru STI with great success! Have any questions on what we did? Shoot me a message!
SUBARU TOP FEED 1050X FUEL INJECTORS
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Dude, I know this is probably super old and you look back at this and laugh. You are awesome! Thank you so much for taking the time showing how to do this. Hope you're doing well. Keep it up!
Since the video is pretty old you probably already know what the the banjo bolt you removed is for. In case someone wonders: it is part of the AVCS system of the intake cam and the blue connector next to it connects to the AVCS control valve for that cam and is held in place by the normal bolt next to the banjo bolt.
I'm so glad you posted this video. I was at surgeline talking to Chris about boost creep on my 15 sti with minor mods and they told me I needed injectors. I wasn't wanting to pull the intake manifold just to do them either. Great videos by the way
Thank you! And Chris is very knowledgeable, super cool dude!
@@Smeedia yeah I'm looking forward to taking my car there
Many thanks for the walkthrough, man! Most comprehensive one I've found so far. If I can add, definitely make sure to lube the o-rings before slipping 'em in. Never wanna go in dry with injectors!
100% don't go in dry lol ive ripped one before gling in dry....
@@Smeedia Oof... That's a mistake you only make once lol
Live and learn 😅
I know this is old but it really helped doing injectors today! 1200cc fic injectors 🙏 hopefully if tuning goes well we will be about 400-450 est whp on pump! Decided to take the risk! At the very least will be happy staying at current power lvl but without 95-100% duty cycle lol 😂 love these videos probably the best install videos ever
Glad it helped! And lemme know how she does on the dyno, those 1200s should help a lot!
@@Smeedia just street tuning but est goal is 450 if she can hit 30psi lol same timing as my friend basically same engine and set up just have higher compression then his so maybe only can do 26-28psi in honesty but will be happy even if I stay at the same power since I know the injectors are safer lol but those blue sti injectors are still solid
Thank you for posting this, had to pull my ID1050’s to verify the size and this helped so much!
And you helped with the ETS Front mount too!
Eyyy glad that the videos have helped ❤
Still helping to this day lol I’m about to verify my injector size too for a base tune any specific side that might be easier to remove?
Great video man. enjoy the in-depth walk throughs. Keep up the content!
P.S. - White wheels is a real commitment 😂
It's a struggle to keep those wheels clean 😅
Fuuuck! My banjo bolt broke broski. Pray for me! Got the broken bit out, but will a new one hold? Who knows lol. I’m gonna be pissed if I jacked up my head…
Smeedia always helping me out man 😵😵 much appreciated 👍
Helping me fix my subie one video at a time 👍
Alqays here to help 🔥
you did not mention the 2 bolts on the bracket back, i am trying to take out is a pain
Did not notice those two when I was filming, they are 100% a pain 🙃
What did u use for those!@ i lost one and the other one just doesnt want to come out!
Bought some hitachi injectors that came with lower seals and fuel rail o’ring is there another seal that goes between the block and injector?
Smeedia by chance do you know the size of the o ring going into the tgv deletes I messed two of them up
On my injectors
This video is old and I don't know if you'll remember. I didn't see you use any lubricant on the o-rings, do you need to use lube? If so what do you use?
You ever go back and watch your old videos?
Yes 😅 very cringe videos lol
Its only been 4 years and i just found this video. Did you sell the injectors.. lol. If not i am interested.
Dude!!!! Not gonna lie I took a dremel and a cut off wheel and cut that drivers side rail bracket close to the tgv motor then removed the banjo bolt then the bolt under tgv. I didn't see the last bolt on that rail on the back of the engine near the turbo down low so I couldn't figure out how the heck you made room to remove that banjo bolt hahha. Drivers side is FOR SURE the worst. I opted for the ID 1050cc injectors myself. Switching over to E85 today and am rewatchjbg some of your videos to pass time while I wait for my next revision hahaha. Good content brotha.
Appreciate it my man! And those damn covers are AWFUL! To deal with 🙃
@@Smeedia no doubt! I get their purpose but goodness could that have gave us a break with cramming stuff in front of them hahahaha.
I didnt take out any support orings under the stock injectors and I've already put one whole side back together. If the rails push down hard enough to seat I wonder what harm it could do...
What Injectors did you swap in? Depending on what they are you might be okay
@@Smeedia cobb 1050x
I have the same ones and I think you should be okay, however next time your in there I would pull out the old O rings
@@Smeedia ya I went and undid things to make it right. It would eat me up inside otherwise. Took me 5 days to do the full stage 2 on rhino ramps in a gravel drive way but I love it. Cant wait to finalize the etune and romp. Ty for the help!
Smeedia did you need to put the stock o rings back on the new injectors getting the IDymaics 1050 or the Cobb after taking the old o rings out,first time for me also how hard was the install dont want to pull the manifold either
I bought Cobb 1050s and I got the passenger side in no problem but the shield on the driver side is a pain. Any suggestions?
I see you ended up moving the tvg gear and in the next frame you had it back to where it was. My question is how did you know where you put it back too? Time stamp 7:30 to 7:35 tvg gear
Tbh I did not, I ended up just putting thr cover back on. The motors should sync them up. They moved pretty freely
Rare chance you might see this. But my car had tons of fuel in the oil, and throwing codes p0011. Could a stuck fuel injector cause this
I see all 👀... for the most part lol
Yes it could, too much fuel can wash the cylinder walls and going into the oil pan
@@Smeedia appreciate the reply. I have the car at a shop rn, and the shop owner thinks its a bad tune. And if he cant figure it out i have to. Very stressful chasing issues down.
What kind of shelf do you have at the back? I like the your concept of using it at workshop table. Thanks in advance
It's a big industrial rack that I got from my old job, they were going to toss it so I took it 😁
What was the purpose of doing your injectors at this stage in your build ? Great videos man glad i found your page !
Thank you! Cobb dose not support a stage 2 SF+ map on the 2015+ STI. I guess something changed with the fuel system from Subaru so the car ran extremely lean with the Downpipe and the Intake. So I needed the Injectors to compensate for the lack of fuel. So the Downpipe is what sparked doing the injectors, boost controller, etc. I never had these issues on my 2007, 2011, 2008 or 2006 STI's in the past so I was a little shocked to find out that something like this changed with the platform.
@@Smeedia I have a 19 STI and just ordered my downpipe, exhaust, and intake im wondering if im going to have the same issue after install. im coming from a 2017 FA WRX that was FBO 310WHP and i had no issues with fuel.
@@insightv1.074 from what I have seen you'll end up running lean like I did. You could get an ETune. I'll be at Cobb today so I'll verify with them and let you know this afternoon what they tell me!
@@Smeedia I guess I was assuming you were getting or had been Pro Tunned, this makes a little more sense to me. I'm thinking these mods with a real 91oct tune would prevent the need for injectors. I'm eager to hear back from you and thanks for getting back to me.
@@insightv1.074 I'm actually on the dyno right now. So what I was told by the tuner is that the 15+ models make more power weather or not Subaru admits it or not and the OEM injectors are already pushed to their limit with basic mods like an intake or a downpipe. So you cannot run a downpipe and intake together on any of Cobbs OTS maps or your car will run very lean. This happened to me and is what sparked me getting all of these parts and a protune.
My car has a loud ticking sound, its not an exhaust leak nor rod knock, my cobb stats are good. Lately its gotten louder. Im thinking it may be the injectors. 2014 hatch wrx
Possible, the injectors can get pretty loud at times
Awesome video, as always! I have a 2013 WRX. Running a PW Verticooler, Cobb SF box, Nvidia DP, electronic boost controller, turboXS CB. Stock everything else. What on the AP can I look at for lean vs rich on fuel? Thanks!
You'll want to look at AFR sensor ratio and have AF correction pulled up 🔥
@@Smeedia Cool, thanks! I'm probably ok but figured I'd have another metric to keep an eye on.
Hi Smeedia, nice vids, but a crazy question, do you still have the oem ones?
Unfortunately I do not 😭
sorry to reply to an old video, but if i run full bolt ons (minus headers), will i need upgraded injectors? (i will have upgraded fuel pump) many people say you do not need for a stage 2 setup for my year (11-14 sti).
Correct you do not need to, I'd still suggest it though 🙏
@@Smeedia perfect, thanks a lot. 😁😁
Hey, great video but I'm having trouble following along doing putting my 1050 injectors in - I believe I've taken the right bolts (middle and left) out and the bolt on the right loose but not out, to move that shield to get to the banjo bolt, but that shield won't budge at all for me, am I missing something? On a 19 sti
Figured it out actually! Didn't realize there were two more bolts on the back of the engine and had to take the intercooler back out. Looking up a picture of the braket on Google helped lol
Those bolts like to hide 😅 glaf you got it sorted!
Currently looking to replace my injectors as I have sporadic rpm jumps when driving. Is it safe to consider cobb injectors if I'm running just a stage 1+ SF tune with an intake on my 2012 WRX or should I just stick with OEM for now?
Cobb injectors are just rebranded ID 1050s. Either option would work. If you do get bigger injectors you will need a tune to compensate. OEM is not a bad option if your on a budget
@@Smeedia gotcha! Ya I wasn’t looking to move up with them if it was going to complicate the tune I have in place but I did suspect my current ones have issues and need replacement. As always, you’re the man and your responsiveness is A+. Love your content bud!
Are replacing the injectors enough to go to the stage 3 tune, or do I need to upgrade the fuel pump , rails, and new fuel lines? I ready have cobb intake, downpipe, and exhaust.
At minimum I would do the pump, get the fuel stumble fix kit and the injectors 🙏
So I got the 2021 STI...any recommendations before I brake my car doing this?? Appreciate your videos. They have helped me almost have the courage to not pay someone or a shop. I want to do this myself but scared currently. Baby steps?
Just take your time, don't rip or pull on anything, it should all come out nicely when unbolted and lubricate the o rings on the new injectors before putting thrm in
Great video brother man
Thank you, appreciate the feedback 🙌
I’m on stock injectors, I have Cobb 1050cc do I have to get a re tune for that if I put them on? I also purchased stock injectors but I don’t want the Cobb ones to go to waste
Yes you will need to get a tune for them 🙏
Why or why not go with tgv deletes? I was thinking about removing my intake manifold so I could also have an easier time with the turbo inlet hose and another video I watched someone else did the tgv deletes. Any pro's/cons to doing that?
It will require tuning adjustments but mainly only for people looking to make more power to smooth airflow into thr heads
Did you drive your car with new injectors/pump assuming you did them at same time before getting your pro tune just staying out of boost? And how did you do your e85 conversion was it these same injectors/pump?
Same pump and Injectors for E85 and I had a base tune to be Ble to drive the car down tk the dhno
Is there just one crush washer on the banjo bolt? Wouldn’t have a part# by chance?
Is it a brass crush-washer ?
Your my go-to for mod installs, thanks man
Two of them, and I do not have it on me. It is just a normal brass crush washer, subaru typically always has them in stock 🙏
Having a misfire on cylinder #4 no blue smoke coming out or weird sounds like knocking. I changed spark plugs ,but not coil packs or injectors. Was wondering your thoughts . Thank you 2010 sti with 106640 miles.
I'd start with moving coilpaxks around to see if it follows the coil
@@Smeedia it was a timing issue . It caused to skip and missfire , and its probably due to me launching alot . The issue is fixed 🙌 thank you for your advice.
Do you need to tune after switching to after market injectors ? I think one injector is going bad on my Subie. I wanna future proof my car for mods
Yes you'll need a tune to properly scale the injectors 🙏
Does it need to retune right after swapping the injectors? Thinking to change out the huge 2000cc out to some smaller ones
Yes you will need an immediate return, the car won't know what's going on with the extra fuel or lack there of
I have an18 sti with a cobb intake and a cat back. I ordered a down pipe and have a appointment for instal and a e tune this week so is it a must to buy injectors?
Your tuner can keep the boost down to compensate for the lack of fuel, you just won't make as much power
Great video
Appreciate the feedback! 😁
If you’re just replacing with an oem fuel injector, do you have to run the car until it dies to clear the fuel pressure outta the lines? I have ‘16 wrx and just need to change cylinder 1’s fuel injector. Keep getting a misfire code. Replacing cylinder 1 spark plug works for about 6 months, but then the misfire code surfaces again. My tuner suggested replacing the fuel injector.
On your WRX? They're direct Injected. I've never seen one of those start to go bad. You'll 100% want to clear fuel pressure. Your car uses a High pressure fuel pump so you'll be misted with a ton of fuel if you don't
@@Smeedia hmm.. ugh. Thanks for your reply. My mechanic said that cylinder 1 injector is spraying fuel a teeny tiny bit faster than the other cylinders which is causing the misfire and also causing the car to run rich. He thinks it’s a tuning issue. Of course the tuner doesn’t think it’s a tuning issue. Tuner said he’s seen fa20 injectors fail. I have a Cobb intake, catted Cobb down pipe, boost solenoid controller, and protune. And here I thought I did everything safe, right, reliably, just to have a little more get up n go along with fun noises and I’m still having issues 🤷♀️
Do you not need to upgrade the fuel rails when upgrading the injectors ??
Nope 🙏
So you take out all the old o-rings and don’t reuse correct? The Cobb 1050x I bought didn’t come with a new separate set of o rings unless the SUPER SUPER thin rubber seal attached at the very bottom of each injectior is the “new” o ring. Can you help me out?
Yessit that is the new O ring 🙏🙏🙏
@@Smeedia I appreciate you sir
Did you leave the fuel rail covers off? Are those required? Seriously don't wanna deal with em again lol
I threw them away, no need for them 🙏
Hey bro did you buy the pig tails separate or did it come with the injectors?
You have to get them separate 🙏
Na it’s good video
Are the pig tail extensions a necessity for this job?
Yes 🙏
hi smeedia we just got e85 available here ontario what mods do i need to run e85 on my 2017 sti i currently have intake and exhaust and a etune.
Injectors, fuel pressure sensor, fuel pressure regulator, ethanol sensor and fuel pump 🙏😁
So, you don't need the Cobb fuel rail? Did you install the Cobb fuel pressure regulator with the stock hosing? I'm trying to decide if I need the fuel rail, fuel hoses and Cobb FPR? Thanks bro!
No need for the rails, I would suggest the fuel stumble fix though 🙏
@@Smeedia the stumble fix is from Cobb and works with the stock rail? I just want to make sure. Thank you!
Yessir 🙏🔥
Hi, hope you are doing well. I would like to ask you for STI 15, to get the performance of COBB NEXGEN STAGE 2. Will it be enough AEM 340lph, 1050X, and the maps on their website to hit 310 hp, or what else do I need? Thanks.
With a proper pro tune yes with an ots tune no
@@Smeedia Thank you so much, will do!
Hey, I have IAG TGV deletes running Cobb 1050 injectors. I installed them and lubed up the o ring like you said on a previous comment but they still seem to all leak. An employee at rally sport direct said I just need to used the old o rings on my previous injectors. Would that fix the problem?
No, unfortunately in my case I had 2 o rings rip ever so slightly and just needed to replace the rings and it fixed the issue
From what I remember the ID1050s (Cobb just rebranded them) use a 14mm O right or an 11mm. I beilive stock is not the same size
What was that random hose from that you had removed and laying ontop of your intake manifold right befor you put your tgv motor back in?
Was the AOS Tube for the top of the head, just wanted it moved a little so I had more clearance
@@Smeedia ok thank you! did you have to deal with any fluid spilling?
you have to put that bolt back in it helps hold your rail in place.
Hi, my driverside injector is leaking air from the engine side and i cant get to it because of the shield.
My question is how you got the rear bolt off the shield? I can´t seem to get to it, any advice?
A stubby 12mm wrench is the best way I've been able to get that bolt out
@@Smeedia sorted it, but it's not going back in that's for sure 🤣
Lol don't blame you 😅 left mine out as well
holy 💩 thinking about doing injector but after this video it seem some complicated. plus does it require a tune after installing
It does require a tune 🙏 the injectors are not to bad to do, hardest part is getting thr Sheila's out of the way
@@Smeedia hey bro does it require a pro tune? if i can’t get a pro tune what you think of E tune?
An eyune will work as well 😁😁 some great e tuners out there!
did you need to rescale the injector?
I did not need to
Hey tanner i know this is an old video, but with the banjo bolt, there is a hole in the center, how do we make sure that is all lined up correctly? And also same with tgv motor, how can we tell if the motor is on the gears?
When you pop the tgv cover off it can only go back on one way so no need to stress there. As for the banjo bolts what hole are you referring to?
@@Smeedia david from the discord helped me with the banjo bolt last night haha! Thank you though. And awesome thank you for the help with the tgv!
@@socialscaper312 what did you end up doing with the banjo bolt? Doing my injectors rn
@@socialscaper312 what did you end up doing with the banjo bolt? Doing my injectors rn
What if I get 1050cc injectors on a stock 2015 sti and don’t get it tuned? I have a slight injector tick and wanna get slightly bigger injectors but I don’t know if that’s the way to go if I don’t plan on getting a tune soon
The car will send too much fuel and it'll run rich. Your going to need to get a tune for them 🙏
Smeedia okay thank you! , what if I got fresh stock injectors would that be alright?
That would be just fine 🙏
Smeedia Thank you 🙏🏽
One more question haha is a slight injector tick bad?, I’ve heard it’s nothing too worry about but I’d love to hear your opinion!
Nothing to worry about, the injectors can be noisy at times
Hey bro, is it ok to just put the fuel injector without changing the fuel lines? what iif i just run a sf intake and dp but get a pro tune with no fuel injectors and fuel pump? will it work that way? i have a 2015 sti. hope to hear back from you and thanks in advance🙂
Your tuner can manipulate the map so your not running as much boost to compensate for the lack of fuel but I do reccomend doing the fuel mods if your getting the pro tune 👀
@@Smeedia thanks i guess i have to wait till i get all the parts then do a pro tune. great videos by the way and thanks for the reply.
oh i almost forgot do i have to change the fuel lines when i install the fuel injector?
Do I need to put those injectors shield back on? Would it affect anything ?
Nope throw them things away
Smeedia the shield were a bitch to take out from both sides, it was no good. I’m not putting them back on, I spent all day removing stuff were in the way then less installing
You still have those blue injectors?
Yes I do! 😁
Anyone know the torque spec on that banjo bolt? I can't seem to find it anywhere.
Good N tight 😅
@@Smeedia thanks a lot 🤣😫
Do I need to remove the entire intake manifold to replace the fuel rails??? Please tell me it's possible without going through all of that trouble. Planning to try installing tomorrow. Thanks brother!
The fuel rails no, but the fuel lines yes 😖
How many WHP max out on the 1050X?
I was able to get a little over 400WHP on my 1050s on E85
Did you already have an aftermarket fuel pump installed before you put in the injectors?
Yes sir, installed it before starting the channel its a DW300C
Smeedia so you were using the fuel pump without a tune before running the injectors?
Yes sir, do not need a tune for just the pump
Hi I just recently changed my gdb wrx stock injectors with an sti upon tuning it something is blocking me in the ecu and now the car is running rich on fuel...any advice to why and would changing the stock ecu to a new one would fix it? Thanks
I'm guessing the injectors were used, were they cleaned before installed?
@@Smeedia sorry for the late reply...I'm not sure I'm guessing yes but if it's not would that be a reason for the ecu not cooperating..my mechanic said maybe it was tuned before using a special software that's why its happening and his suggestion is get a new ecu and start from scratch..agree?
ECUs are a little pricey, I would not jump straight to an ecu. How does your mechanic know that the car has a tune from a mystery software? Most of the time you can overwrite the ECU with a new tune unless it is bricked.
@@Smeedia thank you..maybe it's time to find a new shop..anyway last question sir..atm my car has a catback exhaust,larger fmic,255 upgraded fuel pump, k/n panel filter and an sti injectors now I'm changing the turbo so I can tune it..would I look at vf34 or td05 turbo for upgrade? Thank you again(04wrx..auto)
I would go with the VF34 over the TD05 if you can snag a VF39 that would be ideal
Hey Smeedia. Love your videos! Might do my injectors as well. Do I have to take out the intercooler to do this? Thanks.
Thank you! And yes you will, the injector fuel rail bracket doubles as the intercooler bracket 😁
What crushwashers did you have to swap out when you did this?
www.maperformance.com/products/subaru-oem-oil-feed-to-head-copper-washer-multiple-fitments-803912040?gclid=CjwKCAjwo_KXBhAaEiwA2RZ8hHLoOdbtc9jnPTkHT87k7bVS4KpO0e6alle3WPqU4OuMKSLn4CE4mhoCqWYQAvD_BwE
@@Smeedia how many did you need?
2 bur it doesn't hurt to have some extra
@@Smeedia thank you! I ordered 5. You've been much help to me during my build process! Thanks for the great content!
how long did it take you my man? i don't want to start it now and finish past midnight lol.
Lol it took me about 3 hours to install these 😅
@@Smeedia lol reasonable for how deep in shit they are, ill replace the downpipe while im at it lol, thanks for the reply
Is there a cobb map for the injectors?
Only for "stage 3" which requires additional modifications
@@Smeedia what do you recommend? I have to wait a few days before I could get it tuned. Should I just not drive the car?
Don't drive it unless you can get a base map from your tuner for the mods
POS you said you were gonna show the driver side that's why I watched it.
Drivers side is the exact same as passenger but the shield is easier to remove
You used the stock fuel rail correct?
Correct
Smeedia rite on thank you
Anytime!
Can I go stage 3 with everything except the fuel railes?
Any issue/leaks installing banjo back ?
Nope, re toured it down and get 8t snug, no leaks since then!
Nice !!!And the banjo washer did you replace them and if so wats the parts number ?
@@jameirevora1818 I ended up reusing the washer because I did not have any others 😫 no leaks though!
Oh cool ,thx appreciate it alot 😬😬, guess ima try my luck too 😬😬
Lemme know how it goes!
Nice video, but fuck that. I’m just gonna take it to a shop lol
Do you have any footage of the driver side install? I need to upgrade my fuel system because I have Tomei headers, uppipe, downpipe and a custom catback. I also have a Cobb intake but can’t install it yet because like you, I have to upgrade that fuel. So I need some knowledge, my man.😅
Only filmed one side, the drivers side is the same process but a lot easier, no banjo bolts in the way and the shield is a lot easier to remove. Sounds like you have your hands full! Lol
Smeedia Yeah, sorta. It’s crazy, man. This is my first STI and I’m looking for as much help as I can get. I’m also changing out my spark plugs once I do the injectors. After that, then I’m adding an AOS. Any other little things you can recommend?
What up, Tanner? How you're doing good, my man. Would you happen to know where I can find the el pump fuse for a blobeye WRX? I need to replace my injectors. Would appreciate any adbice you can spare. 😁
I'd just unplug thr fuel pump electrical connector, going to be quicker and easier 🙏 you'd have to get to the relay to disable it that way
@@Smeedia Thanks so much, dude. I'll get on that...
@Smeedia I'm curious, at the time of this injector install, did you also install the AEM fuel pump?
I already have both, but I'm curious if you were able to run injectors only with a Stage 2+ type tune.
I had a DW300C that I installed before starting the channel 🙏😁
@@Smeedia Oh ok. Thanks for the quick reply. You da man!
Was wondering why you didn't have the install. I was able to find one though.
@@Smeedia hey i have a dw300c i want to install now while waiting for my other stage 3 parts, do i need a tune to install just the fuel pump while I'm waiting on the rest of the mods that DO require a tune. Trying to get as much out of the way now before all the parts get in
No sir, fuel pump does not need a tune and you can install it 🙏
@@Smeedia thank you. I am impressed with how you answer everyone's questions so fast and still find time to work on all the cars hahaha
4:30 😌😌😌
Why? Not knowing the history of your mods- why new injectors?
To run a downpipe and intake combo on the 15+ reliably tou need to change the fuel system to compensate for the lack of fuel or you'll drop dam and run very lean
Been looking for this answer.
Appreciate sharing your knowledge. Just instaled cobb dp, cobb Sf intake and iag aos street series. Then boom dam went down 0.87 then ap stated that im running lean.
Had that issue, never seemed to be a problem on any prior STIs I've had. 🙃 glad that you were able to find the answer!
Also local staying in Tacoma area.
Any recommendation install besides fuel pump and fuel injectors?
Thanks in advance!
I would get the Cobb FPR as well to help with the fuel stumble issue 🔥
Still selling the injectors😂😂
Lol I tossed them like 3 weeks ago actually 😅 no one ever bought them or wanted them 😭