Quote:
Originally Posted by gtengr
My understanding is that nothing should be vented anywhere to the underside of the car if it can be avoided.
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Agreed, you want to evacuate the underside, and keep the jet moving/accelerating, to create downforce. Front and side splitters/skirts work to keep the air out. I'd avoid any non-essential under body openings, which can cause turbulence. We used to seal around the air jack openings, on the GTLM/GTD/GT3 Viper. Flat smooth bottom is good. We did have openings under the exhaust, but also played with the location and shape to minimize the effect, and maintain the center jet.