Quote:
Originally Posted by lucid
He said some p-cars actually have plastic "scoops" that are clamped onto the control arm, which simply channel air in the direction of the rotor and showed me an example. I don't know which car the part came out of exactly, but I assume it was an older p-car. There is no reason why such a simple approach would not yield improvement, but we'd still need to cut hole in the existing shield behind the rotor as there is not much of a gap between the rim and the shield for air to flow through.
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All 997 and 987s have a brake cooling deflector on the lower control arm. There are different sizes and designs between models, I replaced my Cayman S deflectors with 997 GT3 parts, a typical mod, just a bit larger and only $22 if I recall. They snap onto the arm w/o fasteners.