B BrianO Member Mar 19, 2009 #2 They scoop outside cold air and help ram more air into the intake making slightly more HP. The colder air is denser than air under the hood, so it can contain more fuel mixture in the cyl. and therefore make slightly more power.
They scoop outside cold air and help ram more air into the intake making slightly more HP. The colder air is denser than air under the hood, so it can contain more fuel mixture in the cyl. and therefore make slightly more power.