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18ss376 · 10-23-2018, 01:28 PM

You started at the wrong end, headers put out the most h.p., a mid or x-pipe maybe 5h.p. & an axle back does nothing for h.p. especially for the A8 cars.

10-23-2018, 01:28 PM	#5
18ss376 Drives: Camaro Join Date: Sep 2018 Location: USA Posts: 520	You started at the wrong end, headers put out the most h.p., a mid or x-pipe maybe 5h.p. & an axle back does nothing for h.p. especially for the A8 cars.