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Has anyone installed those AWE wind diffusers? I would love to be able drive around with just the drivers side window down at 80 mph without having to crack the passenger side window down a bit.
 

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I added them to my 2015 CS - they significantly reduce the Heimholtz Effect, but do not completely eliminate it. You can obtain a close approximation of their effectiveness by using double-sided tape to attach a length of windshield wiper blade to the trailing edge of the original triangular trim piece.
 
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