super 44's stock cat, header, dumps off the muffler???

25thmustang said:

I had the same headers, a prochamber and a Mac catback, and switched to an X pipe and dumped spintechs. Car made 272/316 with the Mac stuff and 258/295 with the spintech and X. I also did the wheels, tires, brakes etc... and it was different days.

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