Quote:
Originally Posted by strych9
This thread has generated some interesting responses. For the record, I am interested in both sound and performance, but the scope of my inquiry focused on the sound benefits, and possible performance detriments if no tune was performed. I already have a cat back Flowmaster AT system. Sounds good, just not as good as my catless, MAC x-piped Mustang did with the same system.
Great points and input by all, including the spirited debate. 
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To be fair, NOTHING sounds as good as a mustang with exhaust. I mean this side of a mid mounted V12....