No actually, warm air combusts better since it helps vaporize the fuel, resulting in a more complete burn. You can get more power out of cold air because it's more dense. Higher density means there's more air and thus oxygen in a given volume. More oxygen means you can burn more fuel, which results in more power. There is a limit though - once intake air temperatures get below about 32°F, you will start to lose power.marine said:Cold air combusts better than warmer air.
A real ram air intake (not the e-bay junk) generally has an air scoop set up so that wind is funneled down the intake, producing a slight positive pressure. The speeds required for a noticable power gain from the ram-air effect are higher than would be reasonable on anything short of a race course.Neo_ART said:I've always wondered what the difference between a ram air and a cold air intake was though, because they all looked the same