word up! only thing about wing vents is......depending on what you want one for they will not allow more air into your filter unless you have a scoop on it. this is because of a thing called the bernoullie effect. which is a physics thing which basicly means that as you are pelting along, the pressure outside your wing is lower than on the engine side, so will actualy suck air out of your engine bay rather than force it in. if you want it for cooling purposes then i guess it would be sucking out hot air?
this is basicly how planes fly, the shape of the wing makes the air move faster over the top of the wing which decreases the pressure and sucks the wing up. or something like that

however, as we all know wing vents look damn cool and the difference you would notice would probably be minimal, so do it!