Quote:
Originally Posted by Bobblehead
IIRC, the N1 will be much louder, but you're not going to see much improvement with just a cat back.
If more power is your main goal, you're much better off getting a header back and a tune. But be wary, if you start with a cat back, it will only get louder and louder as you get a freer flowing exhaust.
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Actually, if power is your main goal then you should be replacing the header and forgetting the rest. There might be minimal gains from replacing the front pipe, but there is little to no gains from a catback.