generally the best place for a vent is at the front of the bonnet (ok hood...). Here in australia a few 80'z sports models were made with reverse facing scoops to best utilise the high pressure area at the base of the windscreen.
At least that explains why my mates rb30 equipped r32 would overheat without the fans on. He had to raise the rear of the bonnet for inlet manifold clearance...
incidentally I never did do a before and after pressure drop test with these trays, just economy and indicated temperature
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Originally Posted by Crazyrabbit
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