Quote:
Originally Posted by roastbeef
Why the one over the other?
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because race louvers have more R&D and are more efficient. I don't mean this condescendingly but go to a GT4/3 race paddock and you'll see almost all of their hood vents have gurney lips at the leading edge of the vent to promote ventilation. Even on some super high end street cars you can see this, like the black series in the photo or the new GT3RS. The cup car in the photo has these lips as well.
Trackspec vents look better imo but don't have the lip and their actual vent design seems generic, compared to the louvers which have more angle as you move across the vent.