Quote Originally Posted by 03renegade800 View Post
I wanna do some performance stuff to my NEW TO ME 97 GTP, do those performance chips that you see on ebay for ten dollars do anything, I am sure they dont, but has anyone had any luck with them.. I know a CAI would be benificial, also a exhaust kit cat back or rip the cat out?? what are some hp gains with exhaust and CAI, where to go for a performance tune or a tuner??? I need help, or i mean the car needs help.
on my grand prix as far as exhaust goes i kept my cat but there are two resistor between the cat and the mufflers that are there to quiet the car down but i cut them out and strait piped it from the cat to the mufflers and can definently feel the power icrease and it sounds great