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      06-15-2020, 06:36 AM   #11
Michael9218
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Drives: 2007 Z4 M Coupe
Join Date: Oct 2012
Location: Woodstock, GA

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Quote:
Originally Posted by JimBob0047 View Post
It all comes down to the factory resonated x pipe. It is a must to keep volume, rasp and drone down. It's too bad there aren't any aftermarket resonated x pipes available for our platform.
I concur. My BMS cat back was too loud. The drone was unbearable. I put the OE X pipe back on and it now sounds good with the Magnaflow 5 x 8 mufflers.
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