>So does that mean that those ram air setups from the '60s and '70s >(plus that new Firebird with the nostrils) was just hype? > -Aron Travis- >"always in a automotive frenzy" No! Like previous people have said, they did it for TEMPERATURE primarily. 1% for every 10 degrees F is a pretty good payoff, but 1/2 p V**2 is tiny at speeds we consider. bw