Quote:
Originally Posted by Yeahyouknwit
i have a question. i have only had one aftermarket exhaust system and that was flowmaster cat back. im confused after reading on here about the exhaust systems. so if you change your exhaust system does that also change your cats or should you change them as well? sorry if this is a dumb question
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Not if you get a cat back system because they only change what comes after the catalytic converter(s), hence the name "cat back" (from the cats...back). But if you really want to get the most out of your (legal) after market exhaust setup you may want to add some high flow cats or get a complete sytem that already has them.