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freebeard · 10-10-2015, 01:24 PM

To the extent that the vent is at an angle to the flow you might get some turbulence bleeding off the trailing edge. A cavity facing forward will have a pocket of recirculating air.

See BMW's air curtain:

http://ecomodder.com/forum/showthrea...tml#post239013

That's a ten page thread from 2011. And here is a genuine BMW part for the left side for $16.95.

Genuine BMW Air Duct 'Air Curtain' Left - 51118068901 - Turner Motorsport

10-10-2015, 01:24 PM	#39 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 27,659 Thanks: 7,765 Thanked 8,575 Times in 7,061 Posts	To the extent that the vent is at an angle to the flow you might get some turbulence bleeding off the trailing edge. A cavity facing forward will have a pocket of recirculating air. See BMW's air curtain: http://ecomodder.com/forum/showthrea...tml#post239013 That's a ten page thread from 2011. And here is a genuine BMW part for the left side for $16.95. Genuine BMW Air Duct 'Air Curtain' Left - 51118068901 - Turner Motorsport