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      02-06-2008, 03:47 PM   #53
LAbull
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Drives: M Roadster
Join Date: Aug 2007
Location: Studio City, CA

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I have the top down all the time. So yes.
I would imagine with the top up it would be a bit louder. That is why I got it.

Several weeks later and I still love the sound.

I suggest this to all Z4M owners!!!
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