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      12-10-2012, 02:41 AM   #2
So Kewl Guy
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Drives: 2010 E93 M3 DCT
Join Date: Sep 2011
Location: Los Angeles

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Originally Posted by W Cole View Post
Were you able to do it without cutting/welding to maintain an OEM look? Any pointers?

I read a thread once where one of the vendors (or tuners) tried this. Of course you would have to cut the top then re-weld shut, but the short version is even after the gutting, there was to much turbulence in the oval shape or something and there was no increase in power. I'll see if I can find this thread.
2010 E93 M3 / AA Catless X-Pipe / AA Catback / AA Pulley / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / AFE Stage 2 / Velos Designwerks Tune