Cold Air

[stock7g]

I'm definitly not mechanic and my knowledge of performance only so far has come from the web (scary thought) but cold air is denser and allow more air to enter engine right? well why not have duct work from a car's a/c to send cool air to intake?

[peanotation]

i dont know about the a/c, but my friend is getting a Co2 tank for his audi, that has coils of piping around his intake, to make the air in the 20s and 30s. sounds sketchy as hell, but its legit and it boasts incredible HP gains, but its expensive as shit.