Quote Originally Posted by I4NI View Post
Running the shorty 3" downpipe, the one that is welded to the cat. Bought that when I was broke just to get by. My front sway just cracked so when the GMPP goes in, I will flip it.

I also bought the zzp pcm when it was still common to (and recommended ) put on a 3.4 without any supporting mods. I've never been able to get a scan but always thought that fueling might be off in that tune. Looking into a overkill if I don't get a tune, tune. That is what I would prefer so I know that it's specific to my car.

Thanks for the help. Might get in touch with you when I have the time to come down to see who you recommend...have you heard of Jeff Creech? He is going to be tuning my GTO soon and I may have him tune the GTP also. Wondered if anyone has gone to him before on here. I think he's in Concord, NC.
I had a 2.5 shorty on my gtp. ZZP's exhaust products are great, but there PCM sucks! Will does a good tune, just takes a lil bit due to the fact he's in Canada. What year GTO do you have? Never heard of Jeff. Im about an hour north of Concord, but I go down there all the time (Bass Pro Shop).