I have a 99 Trans Am that I am looking at possibly putting a bigger throttle body and a stage 2 computer mod on. Now I have heard these help. Is that true or would it be better to go with something different for the money. Also I am looking at exaust what is the best exaust to put on my Trans Am. It already has headers I am just looking for cat back.

 

Go with intake and exhaust first, headers, whisper lid, K&N, ect... then work your way into the engine. Rember the further you go the more its gonna cost. good luck

 

I like my Borla just because its adjustable.
I also have a Dynomax Bullit gives it a lower more mellow rumble.