Not Ranked
I just changed mine over to Classic Chambered Exhaust. They have a good sound but a bit louder. (which is not a bad thing). Not really too different from my old inserts but a better sound. As far as more HP, I can't really tell any difference. I think you'd would have to do a dyno before and after to really tell. All in all, I like them but they do a "rappy" when you let off the gas.
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