Hah... shouda seen the intake on the ITB Golf that I saw at the Lime Rock NARRC this year. I saw it through the grill... and thought... hmmmmmm....

When Black Betty was a street/track car I had fabricated a NACA duct into the headlight cover and the intake temps dropped by about a LOT of degrees on a hot day and yes... I measured it with a multimeter. The drop in the intake charge temp was staggering.

Somewhere I heard the rumor that 10 degrees is roughly 1 hp (for the technical people, I will say uncle right now and I have nothing to back it up except for some bench racing talk). The gain wouda been on the order of 6 - 7 hp. Yikes....

not to start a holy war here... but I would love that intake back and the 6 hp... everyone else could do the same.