Thread: X-pipe fun
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      01-11-2013, 04:11 PM   #7
that's what SHE said!
Drives: 2011 E92 M3 ZCP
Join Date: Jun 2010
Location: OC

Posts: 1,074
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Why not just get test pipes that remove the primary cats? With a tune it should be most of the gains you would see from an exhaust. OEM exhaust is already an x-pipe.
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