Water Injection

This simple unit adds a water "vapor" into your engine cylinder, condensing the fuel mixture, as the vapor turns to steam, it atomizes the fuel into smaller particles which burns more efficient.

A similar system was used in airplanes during WWII. Water was injected into the cylinders on demand to boost horsepower on demand during climbs and dogfight maneuvers. There was only a limited supply of water available for injection on the fighters, but it was considered a valuable advantage. This system was used in several German planes as well as in the famous P51 Mustang and the F4U Corsair.

http://www.rallycars.com/Cars/WaterInjection.html

http://en.wikipedia.org/wiki/Water_injection_%28engines%29