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I have been reading about test pipes lately given there are currently no auto inspections of any kind here in S.C.
Wondering from you guys experiences which sounds better a cat back exhaust(such as borla) or replacing cats with test pipes and adding a pop charger. i know the test pipes would be significantly cheaper but is it safe for for out engines in the long run? I have always heard messing with cats was bad for your motor concerning back pressure and such. Just wondering so i can plan my mods out im starting to get itchy to do some stuff to my car when i get it outa the body shop.
 

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It's a completely different sound. The catback will be a little deeper and more filled out, while the test pipes can be raspy (non-resonated) and only make the exhaust louder than stock, with the same stock tone.
 
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