[wrxsoon2b]

I am not going to mod my sti that much. I just wanted to put a jic cat back on it, test pipe, 3 inch down pipe, up pipe, and maybe a new turbo manifold. What kind of power do you guys think that i could get out of an otherwise stock sti. The beauty of the sti is that its already fairly stout car, I just want to get it breathing a lil easier, and put some nice suspension and wheels on it and make it a daily driver, and weekend track car. I am sorry if you guys get alot of posts like these dont flame me, i apologize if you guys are sick of answering these questions. I am too used to honda-tech thats why i apologize in advance :wink:

[elucas730]

You don't need a new uppipe with the STi - it is already missing the cat. So, what you are basically adding is a turboback exhaust, which should be good for about 25whp - 30whp (with a boost controller). Note, however, that if you do a downpipe and a catback, you will have boost creep unless you port the wastegate on the turbo.

Note - this is not NASIOC, so the flaming is kept to a minimum :wink:

[staticx313]

lol ya, IWS = opposite of NASIOC... anyways... yes you will have to port the wastegate once you start doing exhaust mods. Otherwise you will boost creep past your recommended psi and that is very bad.

Robert~

[wrxsoon2b]

That is kinda wierd that it would do that......Can i just buy an aftermarket one instead or porting the stock one? Might as well if i go through all the trouble. Or is it fairly easy to do. Do i need to get it milled or what? And as far as the exhaust is concerned 3inch is good right? And will it boost creep if i just put the exhaust on it>?