Originally Posted by dblack1
ok in nascar they have the intake between the hood and the winshield where the high pressure is at, and in nascar applications they can get positive boost
I still highly doubt that the air in the intake is pressurized even at 200+mph. We're talking about an engine that is turning at 9,000rpm here. At 9,000rpm a 350 cubic inch motor pulls in ~900CFM. That'* a LOT of air. Even at 200+mph you aren't going to get positive pressure anywhere close to the carb. In comparison, that motorcycle (for conversations sake lets say it'* a 2 stroke 1L or ~60 cid and turns 10,000rpm) would require ~340 cfm of air and (as stated earlier) it only benefitted at air speeds inexcess of 130mph with a scoop facing into the wind.
Now all that technical stuff asside. I assume that given a large enough scoop and the fact that your car could overcome the wind resistance generated, that you could make more power with 'ram air'. But that just isn't practical by any stretch of the imagination.
**EDIT** to correct for stupid mistakes