Thread: DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.
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      11-19-2012, 01:02 AM   #558
samjamin
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Drives: 2009 335i xDrive
Join Date: Nov 2012
Location: NY

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probably answered somewhere in the 26 pages of this thread... but does this have any impact on fuel economy?
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