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      02-26-2013, 04:49 PM   #9
N0OS3
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Drives: E90
Join Date: Feb 2010
Location: Oak Harbor, WA

iTrader: (5)

I ended up trading up for an M3 rep instead. But, i know the parts you are talking about and i would install the air duct as well. Technically, neither air duct is necessary - all they do is channel the air flow directly over your brakes... the only time you really need to slam on the brakes to make them hot enough is when you're going from 70+ to 0mph and you need to stop in a hurry.
It also looks more professional to have everything. ^__^