[JFP in PA]

The only reason those triangles even exist is because of the headlight washer's on the factory Lits. As for using them as air intakes, they are not in a high pressure zone, and may in fact be in a low pressure zone which would cause air to be drawn out of then, so the extra air flow gained could be minimal at best, and you would need the extra weight of ducts to get the air where you want it.

Bit of a futile endeavor...........