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      03-03-2010, 08:16 PM   #52
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Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

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Originally Posted by rav7ks View Post
I have the AA exhaust - great sound but I wanted it a little louder. So I went with an Xpipe with resonators without HFC's(Didn't want the CEL issues). The drone is loud. It's been 2 days- maybe things might settle since I had some things rattle inside the cabin with the vibrations- that was the first day. Today I didn;t have any rattling.
deleting secondary cats barely adds any sound. you mean you still have primary cats? it should just be slightly louder but more aggressive. .... I don't know, don't think mine drones, much, just a slight bit at a few RPM throttle combos.
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