[unknownluder69]

okay many ppl ask this same question and i always tell them the same thing... a catback and horsepower gain dont go together. the top of the line catbac system with headers and an intake will get you a MAX. of like 7hp and that is being pretty leaniant. if i were you ( and Im not) i would plan out exactly how i want my car to perform and then do the modifications that will get me want I want.