i‘ve seen an episode of two guys garage about a ram air intake for a honda civic. it looks like an intercooler.
The company that makes them is called Arospeed. The intake is placed right in front of the radiator, so the heat from the radiator is now being radiated to your intake's housing, which of course is then transferred to the intake air. So you'd actually be taking in hotter air than a normal cold air intake would. Second, whatever tiny ram effect it might have(I'm visualizing too much turbulence across the face of the filter to have any real ram effect, since it's in open air instead of enclosed) is negated by the longer tube with more bends, and the air having to take too many 90 degree turns. You'd be better off getting a real cold air intake, which is probably why you never see it on anybody's car who knows what they're doing. If there was any benefit, everybody would be using it.
