stock STi injector
Registered User
Joined: Nov 2002
Posts: 172
From: Saint Louis, MO
Car Info: 06 Armada, 03 WRX, 05 STi(sold), 05 Vette (sold)
I want to say they are 480cc. On a 2.5 L block I would say they would be running near the ragged edge past 16 psi.
But this is just me talking.
But this is just me talking.
no your right there 480cc. And the ecu you will only allow 17.8psi unless you have a utec you can turn up the boost but dont know how much the injectors can handle.
Registered User
Joined: Nov 2002
Posts: 172
From: Saint Louis, MO
Car Info: 06 Armada, 03 WRX, 05 STi(sold), 05 Vette (sold)
Originally Posted by WRrex13
will replacing the injectors with the pink STI ones and no other modding give my STI an extra kick?
= wont work.
Registered User
Joined: Nov 2002
Posts: 172
From: Saint Louis, MO
Car Info: 06 Armada, 03 WRX, 05 STi(sold), 05 Vette (sold)
Originally Posted by WRrex13
Thanx - you just saved me much time and money.
I try. There are some aftermarket injectors out for STi. I think they are ~800cc or so. Potential for a decent amount of power.
Originally Posted by MJU1983
No, US STi has side feed injectors. The "pinks" are top feed.
= wont work.
= wont work.
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THanx for the replies guys, i guess my real question is, will installing the larger injectors inherently improve anything on a stock STI (i.e. better throttle response, faster acceleration, increase in HP) or will i only see an improvement with them if i reflash the ECU or get a boost controller.
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Joined: Nov 2002
Posts: 4,962
From: watching you get smaller...in my rear-view
Car Info: 02 STi
so what would be an upgrade from the stock 04 Sti injectors? Also, are there any link for the mods people are doing now to the Sti?
I am thinking of doing a trade in, and using most of my parts to make a faster Sti, since I am almost there...minus the 2.5.
-freddie
I am thinking of doing a trade in, and using most of my parts to make a faster Sti, since I am almost there...minus the 2.5.
-freddie
Last edited by 1WRX2NV; Jun 15, 2004 at 07:01 PM.
pe 650 or 800 or you can mod the stock injectors through perrin here is a link http://www.perrinperformance.com/pro.../injectors.htm. All wrx parts are interchangable except the fuel system side.
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Posts: 4,962
From: watching you get smaller...in my rear-view
Car Info: 02 STi
sweet, thanks WRXYBOY!!
I know of another place that does this. So I dont have to waist money on bigger injectors...I can have my stock ones made bigger..right? (from either company)
-freddie
I know of another place that does this. So I dont have to waist money on bigger injectors...I can have my stock ones made bigger..right? (from either company)
-freddie
yeah the only thing is once you do it your stick with it. So your stock will be changed to about 800cc if modded, i would suggest get them bench test for tuning with the utec that way you have a more precise number of max cc. Heres the link to have them tested if you do modify the stock http://www.rceng.com/service.htm.