Simple many times works best, even if it isnt as "pretty". I like this ideaNot worth the money IMO.
Mine's a simple DIY black plastic job that fills the void between the evap system and the rear bumper cover. This substantially reduces the amount of air that stacks up behind the bumper cover and potentially reduces drag, especially at higher road speeds.
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Sorry, I'm German, no easy solutions allowed hahahaha..... look at Vanos from BMWNot worth the money IMO.
Mine's a simple DIY black plastic job that fills the void between the evap system and the rear bumper cover. This substantially reduces the amount of air that stacks up behind the bumper cover and potentially reduces drag, especially at higher road speeds.
Thanks, that was helpful. I made an almost flat front undertray, it also lowered the wind noise.C2 aero makes some good rear diffusers that even cover the evap in the rear. APR sells the front one's that extend to the sides of the front bumper. Couple that with the 2010+ extension and louvered trays, should make a difference in cooling, hood flutter and stability on the road
C2 aero makes some good rear diffusers that even cover the evap in the rear. APR sells the front one's that extend to the sides of the front bumper. Couple that with the 2010+ extension and louvered trays, should make a difference in cooling, hood flutter and stability on the road
No mileage compare so far, but I noticed a much smoother ride on the Autobahn with the front undertray.In addition to my DIY rear under tray, I've also done several front aero mods resulting in significantly better gas mileage, high speed stability, and NO MORE hood flutter:
My 2010 doesnt have that louvered splash shield. Now I want itIn addition to my DIY rear under tray, I've also done several front aero mods resulting in significantly better gas mileage, high speed stability, and NO MORE hood flutter: