Quote:
Originally Posted by kstruve
I have a WRX and the back window never has air flowing over it and it's annoying. I don't have any "wind" to keep it clear when it gets wet or snowy.
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I did this to keep the back window of my Audi clear, works great. Just make sure you put the VGs far enough forward that the vortices have enough space to attach to the surface so they'll make the bend from the roof to the window. About a foot forward of the rear window worked good for me.