Quote:
Originally Posted by headpunter
performance benefit?
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None. Stock exhausts these days tend to flow quite well. Deal with the other bottlenecks first if you're going for power. Long tubes, HFCs or straight pipes, and then catback. Granted sometimes, like with the GTOs, long tubes and catless midpipes sounded like shit with the stock catback so you pretty much had to get something done to the exhaust.