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I have a 2008 GT with a steeda CAI,Steeda throttle body spacer, Bassani offroad xPIPE, Flowmaster 40;s. SCT 93 Tune. Just put the xpipe on last week. Car sounds Horrible, alot of Rasp,throttle response is crappy and alot of crackling from the mufflers. I thought it was the tune but I redid it 5 times with a different one. ANYONE HELP PLEASE
Ditto to all above - I put the stock mufflers back on after doing X and headers - still sounds aggressive but not nasty - I had the other Flowmasters - You might want to switch to O/R H pipe