new cat or not?
Posted: Thu Apr 29, 2004 2:09 am
I talked with a guys who's into mecanics at my gym, and he told me if I don't change the cat at the same time the cat back, the gain will be less than what it can be. The limit will be the tightess place on the the engine. If the end of the headers is 2 inches, a 2.5 inches cat back won't work at its max capacities... So my question is, should I buy a new cat at the same time that my cat back, or you think the original one will do the job cause it's already a good and /or 2.5 inches cat?