BMW Tornado Super Charger - Plus 15HP

TURBONATOR JET FUEL SAVER & PERFORMANCE INCREASE The propeller of Power Launcher Turbine spins with the engine speed generating a maximum force to create a powerful airflow into the combustion chamber at a higher speed.
The propeller sucks the airflow into the combustion chamber at a higher speed resulting atomized burning: increase Horse power and Save gasoline.
The Spining Propeller converts the straight airflow into powerful cyclone at high speed.
The Spining Propeller accelerates the high speed airflow into cambusting chamber, (Engine)
After attached Rubber Ring is 3",
IF the unit is still too small. Additional Reducer/Adapter to fit the size Fits All BMW 4 cylinder and 6 cylinder engines with intake diamters 3" or less (NOT for V8 engines)