1. Improved fuel economy resulting from better fuel/air mixing at light throttle, engine heat recovery and lower piston pumping loss. 2. Lower emissions of NOx, CO, hydrocarbons and CO2. 3. Improved power from lower charge temperature, improved mixing and higher compression/higher boost pressure without detonation. 4. Reduced injector fouling, particularly for propane and natural gas powered vehicles. 5. Alternate fuels can be combined with gasoline, including un-dehydrated ethanol injection. 6. Fuel vaporizes and expands in the Venturi. The expanding charge in the confied space downstream of the throat thrusts fuel/air charge into the cylinder for increased power. 7. Fuel vaporization in the Venturi draws air into the entrance of the Venturi, further increasing horsepower.