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      08-10-2010, 01:55 PM   #19
Chuck76
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Drives: 2009 Z4 3.5i
Join Date: Nov 2009
Location: Bay Area

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Thanks for posting the pics. I just purchased the 3D Design rear spoiler for my AW and will post pics shortly. Question on the rear-diffuser...Is it functional? The way I check, may or may not be correct, is to inspect the amount of dust/dirt on the rear bumper after cleaning. Someone told me that the diffuser efficiency helps with preventing dirt kickup on the bumper. Not all, but some.
Appreciate 0