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      09-14-2012, 11:56 AM   #5
C|3R1C
So Kewl Guy
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Drives: 2010 E93 M3 DCT
Join Date: Sep 2011
Location: Los Angeles

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The catless pipes are the big thing. Some dealers just tell you to swap to original oem xpipe before taking it in. Reflash just be safe. It's what I do so much effort (then again all my problems are always O2 related lol)
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2010 E93 M3 / MS Catless X-Pipe / AA Catback / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / Harrop Supercharger