requires a balanced mixture of fuel and air. If these are both present in the proper proportion, the mixture will produce efficient combustion in the engine, which maximizes the horsepower and performance of the vehicle as well as the fuel efficiency. The Hummer throttle body spacer is a vehicle improvement that is based upon a similar spacer that has been commonly used in racing vehicles for some time, placed under the carburetor for better air intake and increased power. This design has been modified for use in today's fuel injected engines, but serves the same purpose. The Hummer throttle body spacer creates more space between the throttle body and the air intake to allow the air to flow at a greater velocity. The faster moving airflow mixes with the fuel that is sprayed from the fuel injectors on its way to the engine combustion chambers, creating an atomized mixture of fuel and air that holds a higher oxygen concentration and burns cleaner. This enhanced and fast moving flow provided with the help of the Hummer throttle body spacer creates more efficient combustion that makes a very noticeable difference in the power and performance of the vehicle, as well as a significant gain in fuel mileage. We carry a selection of the Hummer throttle body spacer in our online catalog at great low prices.