Thread: Cheapest Xpipe
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      12-10-2011, 02:54 AM   #11
scotsman
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Drives: 2008 E90 M3
Join Date: Aug 2008
Location: Sugar Land, Texas

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so what i've gathered is for the best power with a xpipe you need to lose the primary cats... the problem with this is i won't pass an inspection and it throws a cel?