Can I put a sti turbo on my 04 wrx?

obxtoy · 11-10-2004, 05:33 PM

I was thinking of just putting a bigger turbo on my 04 wrx but am worried about warranty issues so I thought maybe the STI turbo would fit the 2.0l wrx motor and would gain more boost and hp.

Is that even possible with little modifications?

Thanks

Paul

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Trunk_Monkey · 11-10-2004, 05:34 PM

Dosent everything void warranty?

obxtoy · 11-10-2004, 05:44 PM

Yeah im reading enough bs that I wont touch it until I still have it and its over. Ive read alot of issues with aftermarket parts with the dealers. Even Subaru said that they wouldnt warranty it to the related part only though, but Im still afraid of getting screwed. Maybe I should ask my local dealer...

Just a thought that if they saw stock they couldnt say anything...

Capt Crunch · 11-10-2004, 05:52 PM

won't work. The sti turbo is bigger. The sti motor is "built" to handle the "larger" turbo. It's a load of crap, a WRX motor can easily handle a vf39, but Subaru won't honor it. You would also need different injectors and fuel pump and engine management, all of which are easily noticable. If you want you warentee, don't touch your car, sorry mang.

granteeton · 11-10-2004, 06:33 PM

will it work, yes. will you still have warranty, only if you have a tech that doesn't know the difference in the turbos.

obxtoy · 08-10-2005, 06:11 PM

thanks for the advice, im staying with stock for my warranty for now

scoobie555 · 03-07-2025, 11:43 AM

Hello all I'm actually doing this right now with an old 2004 wagon. If I put the larger STI turbo on there, will it run okay if I do not upgrade injectors, fuel pump and any engine management? Just stock ECU. However I'm not worried about warranty LOL

02gda · 03-09-2025, 05:52 AM

Quote:

Originally Posted by scoobie555

Hello all I'm actually doing this right now with an old 2004 wagon. If I put the larger STI turbo on there, will it run okay if I do not upgrade injectors, fuel pump and any engine management? Just stock ECU. However I'm not worried about warranty LOL

It will work, but you might have issues up in the rev range as I don't believe the injectors will hold up and with the stock ecu might not recognise the extra power. But if I'm wrong let me know

Charlie-III · 03-09-2025, 11:31 PM

Quote:

Originally Posted by scoobie555

Hello all I'm actually doing this right now with an old 2004 wagon. If I put the larger STI turbo on there, will it run okay if I do not upgrade injectors, fuel pump and any engine management? Just stock ECU. However I'm not worried about warranty LOL

So, shoving more air in without adding more fuel......what do YOU think once it's on boost?

My guess, it will go lean.
Do you plan on a AFR gauge? At least then, you can see what happens.

11-10-2004, 05:33 PM	#1
obxtoy Scooby Newbie Member#: 63633 Join Date: Jun 2004 Chapter/Region: MAIC Location: Faifax Vehicle: 2004 wrx blue	Can I put a sti turbo on my 04 wrx? I was thinking of just putting a bigger turbo on my 04 wrx but am worried about warranty issues so I thought maybe the STI turbo would fit the 2.0l wrx motor and would gain more boost and hp. Is that even possible with little modifications? Thanks Paul * Registered users of the site do not see these ads.

03-07-2025, 11:43 AM	#7
scoobie555 Scooby Newbie Member#: 54159 Join Date: Feb 2004	Bump Hello all I'm actually doing this right now with an old 2004 wagon. If I put the larger STI turbo on there, will it run okay if I do not upgrade injectors, fuel pump and any engine management? Just stock ECU. However I'm not worried about warranty LOL

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11-10-2004, 05:34 PM	#2
Trunk_Monkey Scooby Specialist Member#: 71032 Join Date: Sep 2004 Chapter/Region: MWSOC Location: NW Chicago Burbs Vehicle: 2003 WRX World Rally Blue	Dosent everything void warranty?

11-10-2004, 05:44 PM	#3
obxtoy Scooby Newbie Member#: 63633 Join Date: Jun 2004 Chapter/Region: MAIC Location: Faifax Vehicle: 2004 wrx blue	Yeah im reading enough bs that I wont touch it until I still have it and its over. Ive read alot of issues with aftermarket parts with the dealers. Even Subaru said that they wouldnt warranty it to the related part only though, but Im still afraid of getting screwed. Maybe I should ask my local dealer... Just a thought that if they saw stock they couldnt say anything...

11-10-2004, 05:52 PM	#4
Capt Crunch Scooby Guru Member#: 10852 Join Date: Oct 2001 Chapter/Region: MAIC Location: Cleveland / UMD College Park Vehicle: Then : JDM Ver 7 STi Now : E46 M3 / MKVI GTI	won't work. The sti turbo is bigger. The sti motor is "built" to handle the "larger" turbo. It's a load of crap, a WRX motor can easily handle a vf39, but Subaru won't honor it. You would also need different injectors and fuel pump and engine management, all of which are easily noticable. If you want you warentee, don't touch your car, sorry mang.

11-10-2004, 06:33 PM	#5
granteeton Scooby Newbie Member#: 53529 Join Date: Jan 2004 Chapter/Region: TXIC Location: Lewisville, TX	will it work, yes. will you still have warranty, only if you have a tech that doesn't know the difference in the turbos.

08-10-2005, 06:11 PM	#6
obxtoy Scooby Newbie Member#: 63633 Join Date: Jun 2004 Chapter/Region: MAIC Location: Faifax Vehicle: 2004 wrx blue	thanks for the advice, im staying with stock for my warranty for now