Water/Methanol injection.
Cheap, easy, safe.

Water and methanol injection kits offer chemical intercooling and power simultaneously to add power to your car or truck. Water, with its high latent heat of vaporization, cools the intake charge and combustion. Methanol also cools the charge and combustion, but also acts as high-octane fuel (up to 120 octane) and adds more oxygen to the combustion. These water and methanol injection systems contain everything you need for more horsepower, and are great in gasoline supercharged or turbocharged vehicles and diesel applications.