upgrading my 97 gs-t with... big 16g turbo, front mount intercooler, greddy bov, cold air intake, k n filter,
i already has a cat-back exhaust system installed, what hp gains am i looking at here? im around 220 right now.

 

you're going to want to get a bigger fuel pump, and a tuning device, along with an a/f gauge, wideband of course.

 

Also injectors. With those mods it will be about the proper fuel mods, and a good tune.

 

yeah forgot that, 550cc's at the least right? or am i wrong about that can't remember.

 

I'd start with 660's myself.

 

just so you know your not really at 220hp. Thats only at the crank. WHP is more like 180 or so. But with a 16g, a good tune, and all the supporting mods you cant get about 300whp very easily.

 

Ya.. And if you only have an exhaust, it doesnt add +10 hp like that.. It will allow you to get more hp out of your other mods as you go along.. Instead of only getting say +50 hp out of a different turbo, it may allow you to get +60 b/c of the better air flow.. But by just adding an exhaust to a stock setup wont give you much.. Maybe 3-5.. But it will definately help later on for you! Specially if your going with those things.

 

yeah that's tru and if you plan on just having a 16g and never upgrading 550 cc injectors will be fine, and yeah get a wlabro 190lph fuel pump and a wideband and a afc or at least a fpr