another exhaust thread....

[chrisgsx]

I know a lot of you guys have sd headers or ssacs, they come with the 3in downpipe, I was wondering I finally got the 97 gtp running and I was wondering should I just run 3 inch pipe all the way back to the muffler? Or downsize to 2.5 or something close to that sound..and would three inch sound bad? Opinions would be appriciated...what setup are you guys running and how do you like it? Tia

[TheOtherNick]

Like every other thread, keep the stock cat back unless you plan on making 400whp.

[chrisgsx]

Wellll here's the deal when I bought the car it came with nothing....so I'm starting from scratch. Any ideas on that note?

[chevyy1212]

3" since you got a GTP 2.5" is for N/A. I know the shop by me will run a whole stock catback for next to nothing. You may need to bring an interpreter tho

[KeithGTP03]

Im running 3" dp w/ high flow cat. With stock mufflers, it sounds like this

YouTube - Grand Prix exhaust