can i put a performance muffler on a stock cat back?
08-24-2006, 08:47 PM
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can i put a performance muffler on a stock cat back? i have a turbo 408 trans am with a 4 inch downpipe. i want the car quiet but to flow well. can i put a stock 3 inch cat back on and put a good flowing muffler on? if so, what kind of muffler would flow well with my motor?
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08-25-2006, 08:13 AM
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jesse, you have a hi-flo kit, not an STC kit, and yeah, a factory catback with one of the aftermarket "drop in" mufflers would be ok.. like a borla/flowmaster etc. the muffler design of the factory catback is not IDEAL for turbo exhaust but it will work well for the time being. I suggested the factory catback deal cause it would be the easiest, but if yuo watn to put time into welding/etc i would just run a muffler off the single pipe then and run it to a T after a muffler then dual pipes out teh back. Something like a borla XR-1 3" or 4" muffler.
