i have a 93 camaro once my cat clogged on it i just cut it off took a bar and knocked everything out of it to where it was hollow than welded it back on. im guessing that would be the same as adding just a straight pipe if so it really didnt make much of a difference. but my buddy had a 01 ram in high school his cat got cut off over night and he had to drive with out one lol that was loud!
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