Basically what this is saying is that +.34 Psi @ 14.21 psi = + 17hp difference IN FAVOR of ram air. Which is good. However air is incompressible at speeds below 230mph IE: 14.7psi @ sea level + xx value.
So the ram air does work at bringing the PSI close to atmospheric pressure of 14.7, but will not cross that threshold until ground or airspeed reaches at least 230mph.
So myth confirmed, to a point. My apologies, as I should have said ram air to create boost, as boost is defined as 14.7psi + xx.
Exactly, you don't necessarily need boost to create more power, more flow will do that. However there are plenty of MAP readings out there showing above and below atmospheric pressure depending of configuration of the inlet. Do you think a knowledgeable racer would sacrifice aerodynamics of a protruding hood scoop if it slowed the car down? I think not. Do you think none of these teams test?
Doug
