I'll be throwing a Turbosmart Dual-Port BOV on my '23 WRX at some point for sure. Many years ago when I had a Fiesta ST, I swapped the factory diverter valve for the Turbosmart Dual Port, (back in the day with that car, it converted the BOV from electronic actuated to vacuum actuated, so a bit more of a project.) And holy wowza did it up the fun factor. Ran it for 10k miles before trading the car in, never had an issue with idling or stalling or anything on the Cobb stage 1 OTS map, which absolutely did not account for a dual port. Granted Subies are a different platform, but I have high hopes running a dual port won't cause any issues, especially since I trust Turbosmart's R&D. What we really need is a vacuum-actuated BOV for the WRX imo. Can't get that partial-boost BOV flutter with an electronic BOV as far as I know. And boy do I miss that flutter sound. Great video as always IIR!
There's a peculiar (and unpleasant) tone as you approach redline with both of the Turbosmart components that was not present with the GFB - it's similar to a squeaky hinge. (and feels like nails on a chalkboard to me) Is this inherent to the design? GFB @ 4:08 lacks the sound, Turbosmart has it at both 6:01 and 8:04, (recirc vs dual port, respectively) and it was even noticeable in the in-car audio for the Turbosmart components.
Voiding warranties is always a touchy subject. The valve itself shouldn’t affect the car in a way that would void a warranty. But if you have an engine failure, the dealership will do everything in their power to keep from warranting the job. They might blame any failure of aftermarket parts. If concerned, I would swap the factory valve back in the car before transporting it to the dealer if such an event happens.
@@Just_my_vb There are two workarounds: 1. Do not engage clutch just after WOT Rev. Wait 2 - 3 seconds after decell. 2. After Pshhhh quickly press and release accelerator pedal (clutch is engaged). Any of these will prevent stall.
my OEM setup already has an idle problem. sometimes when getting on it and coming to a stop, the idle drops to 550, then jumps up to like 850, then back to normal. This occurs over like 2 seconds.
Unlikely due to the BOV in these cars being integrated into the compressor housing of the turbo… Also the newer systems use electronic motors to activate the valves instead of a vacuum based system those older BOV’s use…. But I’m sure someone out there will do it! 🤘🏻
Thank you for commenting. I go into some pretty good detail at the end of this video to help ease your mind about doing a aftermarket BOV. If you’re worried, stick with a full recirculating valve and you can’t go wrong… P.S. it’s a ETS intake system 🤘🏻
Unfortunately, with all of the emission’s restrictions we face these days, speed density tuning has become something tuners can’t do. Not because they don’t want to!! But because most manufacturers have eliminated the ability to bypass important sensors needed to calculate emissions.
The relief inside the turbo housing is much smaller then the piston. There’s no way for the piston to drop fully out of the housing once installed. Tolerances are tight, but installing correctly isn’t very difficult.
Lots of people run TurboSmart Dual Port Valves with no tune and no issues….. With that being said, no one can “promise” you won’t have any issues. If you’re concerned for any reason, I would choose the TurboSmart Plumb back style BOV.
dual port will never work well with maf. you need a speed density tune as speed density doesn't use mass air flow for fueling calculations. that being said its not really a big deal. car will go a LITTLE rich for a second not gonna really hurt much.
I have a question: already buy with you guys the GFB Diverter, the noise it’s not bad! But when I drive my car I can not hear nothing lol if I stay outside yes but very low!!! How I can do for more loud noise? I need to buy other one?
@@ImportImageRacing already have the Cobb intake, and inter cooler with hoses but idk what happen! You think maybe my intake Is it incorrectly installed and leaking air?
A OPEN AIRBOX WILL MAKE IT LOUD Trust me I got classic, antique blow off vales from the fast & Furious there where soo many. HKS was very popular ..... if u have problems and big power then speed density
When it comes to the dual. (Can someone dumb it down for me please) it’s best if it’s not installed in a stock? Why if you wanna play it safe don’t go dual? is it bette/safer to have some bolt ons to install dual? (Like intake and charge pipe) 😅
It all comes down to tuning. The dual port releases roughly 50% of the unused air into the atmosphere. That air was previously accounted for by the Mass AirFlow Sensor. The lack of air causes inconsistencies in the cars factory tuning. This may turn into drivability issues depending on the car and your driving style. The easy answer is… stay with a recirculating valve if you don’t plan to modify the car much further. Or pick up a dual port if tuning is in your future!
There are two ways to do it then, keep it legal and do the cobb pipe + drop in filter, or take all the stuff out and throw in a perrin intake kit both do not require a tune. @@Elder-231
Thank you! Any questions, just let us know we are happy to help. Cobb doesn't allow discounts unless military, but we can always help out on perrin :) @@Elder-231
I'm pretty sure I spent thousands because of you guys now. But hey...that WRX looks semi decent for once from stock. I hate yall and love yall. much love.
Every time IIR drops videos my wallet gets lighter.
Thank you for keeping us in business
@@ImportImageRacingso far you guys have the best website for parts. No issues, fast shipping. Good stuff guys. 👍
Facts and I like it ❤
Facts 😂
Get a different wallet then lol
Got the dual port and love it sounds amazing no issues with it at all goin on 1000+ miles since install
Awesome! Thanks for the feed back 🤘🏻🤘🏻
Are you tuned?
@@snoopyalien24also interested if he’s tuned. Our car is and we didn’t have any issues. So I’m interested in what he says
No sir no tune planning on not tuning for as long as i can since i wanna be able to use my warranty@@snoopyalien24
No tune and no issues no check engine no boost leaks we are good boys @@BuckleUpGarage_
I like the Perrin alone sound with stage 2 cobb. I like hearing the turbo whine down
Still debating if im gonna get the dual port since im already getting so much bov noise after doing the mishimoto intake
If you’re happy, I’m happy! If the noise level is what you’re looking for, then stay with full recirculating 🤘🏻🤘🏻🤘🏻
I’m running a mishimoto intake with a dual port it’s definitely louder and actually noticeable from the outside.
just bought the mishimoto intake, do you really hear that much of a difference with just the intake?
@@infms3239just installed the Perrin and yeah it's so much louder than stock but only on hard acceleration
Solid video! Dual port sounds sweet
Thank you, glad you enjoyed it!
Wonder if one can made any of the wrx mods to the turbo outback since they share the same engine
Great video and informative 🫡
I'll be throwing a Turbosmart Dual-Port BOV on my '23 WRX at some point for sure.
Many years ago when I had a Fiesta ST, I swapped the factory diverter valve for the Turbosmart Dual Port, (back in the day with that car, it converted the BOV from electronic actuated to vacuum actuated, so a bit more of a project.) And holy wowza did it up the fun factor. Ran it for 10k miles before trading the car in, never had an issue with idling or stalling or anything on the Cobb stage 1 OTS map, which absolutely did not account for a dual port. Granted Subies are a different platform, but I have high hopes running a dual port won't cause any issues, especially since I trust Turbosmart's R&D.
What we really need is a vacuum-actuated BOV for the WRX imo. Can't get that partial-boost BOV flutter with an electronic BOV as far as I know. And boy do I miss that flutter sound.
Great video as always IIR!
There's a peculiar (and unpleasant) tone as you approach redline with both of the Turbosmart components that was not present with the GFB - it's similar to a squeaky hinge. (and feels like nails on a chalkboard to me) Is this inherent to the design? GFB @ 4:08 lacks the sound, Turbosmart has it at both 6:01 and 8:04, (recirc vs dual port, respectively) and it was even noticeable in the in-car audio for the Turbosmart components.
I have the turbo smart duel port on my edge st and no problem with it "yet"
8:00 The sound of our people we've been waiting for 🤌
I use a Perrin old school vacuum valve and listen to your tuner . Plus electronics and heat equal failed parts at the end.
I don’t even know if you guys sponsor but I want to be sponsored by y’all so bad. Amazing work and so helpful always👌
Didn't ever notice you were in Ft Myers. Probably won't make it any time soon from Orlando, but if I do, I'll say hey!
Please do! 🤘🏻
Hey! Can anyone tell me if these will work for CVT?
Yes, but it isn't really a necessary modification
Yes sir, it will work
@@BuckleUpGarage_ cool. Thanks!
How does it work on it tho?
Probably not the dual port but the full Re circulating ones
Thanks for doing the comparison video
Do you need a tune for a Bov
Will this void warranty also is there any damage to engine long term with no tune
Voiding warranties is always a touchy subject. The valve itself shouldn’t affect the car in a way that would void a warranty. But if you have an engine failure, the dealership will do everything in their power to keep from warranting the job. They might blame any failure of aftermarket parts. If concerned, I would swap the factory valve back in the car before transporting it to the dealer if such an event happens.
21.2 PSI!? WOW!!!
Add anything other than a cat back exhaust to your Subi = tune. Regardless of what the maker of the part says. Learned the hard way.
You should rev it to max in WOT then go into idle in this case it will stall with dualport.
This is very true! I was so confused when my car kept stalling when i rev.
@@Just_my_vb There are two workarounds:
1. Do not engage clutch just after WOT Rev. Wait 2 - 3 seconds after decell.
2. After Pshhhh quickly press and release accelerator pedal (clutch is engaged).
Any of these will prevent stall.
my OEM setup already has an idle problem. sometimes when getting on it and coming to a stop, the idle drops to 550, then jumps up to like 850, then back to normal. This occurs over like 2 seconds.
I think all my Subarus have done this a bit. Maybe boxers are more prone to rough idle and searching for idle like you described.
@ thanks for letting me know.
I have the the dual port and it is audible inside/outside
Excellent! Thank you for your feedback!
BOV require tune?
recirc no, atmospheric, yes
guess I should have watched the rest of the video before commenting lol. Thanks! @@ImportImageRacing
Will we ever be able to do the greddy type s or HKS SSQ bov on these cars? I miss those sounds.
Unlikely due to the BOV in these cars being integrated into the compressor housing of the turbo… Also the newer systems use electronic motors to activate the valves instead of a vacuum based system those older BOV’s use…. But I’m sure someone out there will do it! 🤘🏻
This is awesome man ❤😂🎉
Glad you like it!
Love❤ sound effects 🎉
I thought the aftermarket blowout valves where not good for a stock engine?
If it’s full recirculating it works exactly like the stock one does! He explained that in the video.
I just want to hear my turbo more. Do these void the engine/turbo warranty? Or do they need a tune?
Nah it doesn’t bud. Your good as long as you don’t do a blow off valve.
Your stock car already has a recirculating blow off valve!
Do i need a tune for GFB Diverter Valve DV+ w/Integrated Solenoid ?
I'd choose a bypass valve for performance that just a sound
Is it actually safe to do a bov? Ive heard its better off running and intake, whats the intake on that?
Thank you for commenting. I go into some pretty good detail at the end of this video to help ease your mind about doing a aftermarket BOV. If you’re worried, stick with a full recirculating valve and you can’t go wrong… P.S. it’s a ETS intake system 🤘🏻
You left iAG?
Yes sir, it’s been a year… almost to the day of your comment! 🤘🏻😎🤘🏻
would a speed Speed/Density Tune be necessary?
Unfortunately, with all of the emission’s restrictions we face these days, speed density tuning has become something tuners can’t do. Not because they don’t want to!! But because most manufacturers have eliminated the ability to bypass important sensors needed to calculate emissions.
Would this work for my 2019 wrx?
Wait what keeps the GFB valve from dropping its piston if the car shakes or something?
The relief inside the turbo housing is much smaller then the piston. There’s no way for the piston to drop fully out of the housing once installed. Tolerances are tight, but installing correctly isn’t very difficult.
can i go dual port without a tune? will it give me some issues?
Lots of people run TurboSmart Dual Port Valves with no tune and no issues….. With that being said, no one can “promise” you won’t have any issues. If you’re concerned for any reason, I would choose the TurboSmart Plumb back style BOV.
@@ImportImageRacingThank you so much for the reply I appreciate it
Has Cobb come out with tuning software for the 2023 yet?
heck yes, about 2 months ago!
I have a question which turbo smart dual port valve would be for the 2019 version
I got just the BOV for you!
www.importimageracing.com/products/ts-0215-1018-turbosmart-blow-off-valve-dual-port-black-subaru-wrx-2015-2021
The blow off that has a loud sound is the Turbosmart Kompact EM VR24 Dual Port Blow off Valve?
That is correct!
dual port will never work well with maf. you need a speed density tune as speed density doesn't use mass air flow for fueling calculations. that being said its not really a big deal. car will go a LITTLE rich for a second not gonna really hurt much.
I wouldnt suggest any subaru owner to get a blow off valve. Just go with an intake
I have a question: already buy with you guys the GFB Diverter, the noise it’s not bad! But when I drive my car I can not hear nothing lol if I stay outside yes but very low!!! How I can do for more loud noise? I need to buy other one?
For maximum results, couple your GFB valve with an intake! 🔊
@@ImportImageRacing already have the Cobb intake, and inter cooler with hoses but idk what happen! You think maybe my intake Is it incorrectly installed and leaking air?
@@ImportImageRacing intercooler with its pipe
A OPEN AIRBOX WILL MAKE IT LOUD
Trust me I got classic, antique blow off vales from the fast & Furious there where soo many. HKS was very popular ..... if u have problems and big power then speed density
I have 2024 stock Wrx, can I run a turbo smart bov and the engine be safe without any other mods to support it?
Yes, a dual port BOV is the best combination of sound and performance.
😂 5:23 Reeking benefits 😂
When it comes to the dual. (Can someone dumb it down for me please) it’s best if it’s not installed in a stock? Why if you wanna play it safe don’t go dual? is it bette/safer to have some bolt ons to install dual? (Like intake and charge pipe) 😅
It all comes down to tuning. The dual port releases roughly 50% of the unused air into the atmosphere. That air was previously accounted for by the Mass AirFlow Sensor. The lack of air causes inconsistencies in the cars factory tuning. This may turn into drivability issues depending on the car and your driving style. The easy answer is… stay with a recirculating valve if you don’t plan to modify the car much further. Or pick up a dual port if tuning is in your future!
@@BuckleUpGarage_ thank you
@@rommelsegura9096 always a pleasure to help! 🤘🏻
I have the plumb back and i can’t hear anything lol
The charcoal filter, silencer/box really do a number on the sound. If you add an intake, get ready!
@@ImportImageRacing which intake do u recommend because im not planning on tunning the car just want sound?🙏
There are two ways to do it then, keep it legal and do the cobb pipe + drop in filter, or take all the stuff out and throw in a perrin intake kit both do not require a tune. @@Elder-231
@@ImportImageRacing will be looking forward to this I appreciate it ur help i know u have a lot of knowledge on this
Thank you! Any questions, just let us know we are happy to help. Cobb doesn't allow discounts unless military, but we can always help out on perrin :) @@Elder-231
I'm pretty sure I spent thousands because of you guys now. But hey...that WRX looks semi decent for once from stock. I hate yall and love yall. much love.
Well i'm pretty sure we love you :P
@@ImportImageRacing 🤣
Whats the point of buying a blow off valve when they come with a ecu controlled wastegate?
No turboXS? Seriously?
Yea they need to better sounds
This void warranty?
What warranty 🤣
No, in case you reverted to stock before visit ti dealership
This guy needs to settle down.
NEVER!
I run the dual port. That things is awesome. I can hear the purge over my music. Im in the market for a new one but I see nothing much has come out
Dual port is a great choice!
Nerd
Whats the point of buying a blow off valve when they come with a ecu controlled wastegate?