[Stan Weiss]

Originally Posted by TCSGTO

Yes, they are at the boundary layer and don’t really “ram” anything. I kept the open scoops but ditched the pan when the car started getting well into the 11’s. Up till then it did seem to help a little on the street on hot days but you cool your engine down between passes anyway at the track.The scoops got to be a restriction at higher power levels.
FWIW keeping the fuel cool is probably worth more power than cooling the air. Cool fuel pulls more heat out of the intake tract than air. The old 1% increase in HP per 10 degree temp drop rule of thumb has been disproven many times. There is an improvement but not that much.

Interesting. If you look at how the dyno correction factor is calculated you will see that SAE 607 (which is used by most engine dynos) works out to just about 1% per 10 degrees,

Stan