From back in the 70's, where you get a canister, aquarium air stone, and some line and simply Tee it into a vacuum line. Its supposed to feed moist air and thus "water injecting" your car (which has its advantages if you already don't know).
Mother Earth Alcohol Fuel: Ron Novak's Do-It-Yourself Water Injection System
Anyway, has anyone ACTUALLY done this? It seems SO cheap to do that I might try it and see what happens. I mean it literally is like $5 to do.
I want to see if anyone has done this and what they thought about it?