Don't get me wrong, this can totally work. You'll just have to change the contour of where the windshield meets the hood, and get rid of the windshield wiper panel, and re-contour the back edge of the hood so the air exits in the correct direction and merges with the laminar flow across the hood. Easy.

You're going to make me quote myself, aren't you...


Let's recap. There is a stagnant flow area at the base of the windshield, where the wipers are. The deeper that area gets (or the faster the airflow over that area), the more stagnant that becomes, and a turbulent area forms. When you raise the back edge of the hood, you're making that area deeper, and more turbulent. How well do you think air exits from beneath the hood right into an area of turbulent flow? Air moves according to pressure, and if you can't make the area under the hood (at that back edge) lower pressure than than the air over it, it's not going to work. Like I said, you can make it work, you just can't expect it to work unless the rest of that area is designed for that. You'd actually do better cutting holes in the windshield wiper cowl panel than you would raising the hood edge.