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      08-13-2012, 03:11 PM   #25
RobMCoupe
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Drives: 2007 Z4 M Coupe
Join Date: Feb 2010
Location: Bay Area

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Quote:
Originally Posted by David70 View Post
RobMCoupe - From looking around on this forum I think you also have headers or an intake? Headers also change the sound I believe?
I have stock intake with BMC drop in filter. Spending $400 + for an intake was not worth it. All research said stok intake is already CAI.

Headers makes the exhaust a bit louder. I really noticed the change after adding RE X-Pipe. There is exhaust fest thread here. The two loudest car have Euro Headers and X-Pipe.
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