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just curious, with your low cd, ever have any problems going downhill, as far as not having enough brakes?
reason i ask, is i barely have any mods done, (estimating a cd of .31-.30 and frontal area of 20 feet), and going down the grapvine, with the car in 4th, the car will still accelerate to 75 mph, which is 10 mph above the speed limit. In neutral, it'll top 100. The grapevine is also a very bad place to speed as there are highway patrols hiding everywhere.
Last trip down, i was able to coast 15 miles in without gas, and without dropping below 55 mph. 7 of those miles were at a 6% decline, and those miles were pretty hard on the car. I had it up to 4000 rpm while engine braking, and i assume it will only get worse as the aero gets better.
Ill be making another trip down it in a couple months, with an extra 100 pounds in the car, and a few more aero tweaks (going from removed side mirrors, full grill block, no antenae, no wipers, and gap fillers on the rear tires, to all the above plus rear wheel skirts, front gap fillers, and wheel disks).
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