I believe the less restrictions on air flow creating a laminar flow (least turbulance) before combustion, would allow more and better air flow into the air intake My2C. And agreee with Jack, on the track, going up and down in RPM's the engine air flow changes so much that what you need is more air rather than temp changes... Keep in mind that an IC engine is just an air pump = more air more power. [url]http://forums.pelicanparts.com/uploads8/930+K+N+air+filter1159135094.jpg[/img]
