Thread: what is this??
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      12-07-2012, 06:32 PM   #4
Came to the N55 Darkside
Dark_Knight_335's Avatar
Drives: 2011 335 E93 M-Sport
Join Date: May 2010
Location: NY/NJ

Posts: 10,148
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On any car- unless you're doing over 120 mph- it does actually nothing but look nice.
Even then, gains are negligible IMO.
Dark_Knight_335 is offline   United_States
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