Millennium CNG Conversion Kit For 8 or 10 Cylinder Fuel Injected Gasoline Engines Model CNGM8 Comes with a Super Output Regulator and a 1 year warranty Automatic conversion to gasoline before you run out of CNG with an option to always start on CNG. All computer controlled solid state electronics with no mechanical parts or relays. Oxygen Sensor diagnostics to warn you of any operating problems. Includes downloadable software and USB cord, installation and operating instructions along with tips, how-to information, and a trouble shooting guide Millennium is the World's Best Computerized Single Point Fuel Injection Conversion Kit for Fuel Injected Gasoline Engines. Universal and works on all gasoline fuel injected engines. This is how our Millennium Kit Operates: The system is wired to turn off the fuel injectors when running on CNG. You can switch to either fuel anytime. The regulator reduces the high pressure CNG coming from the CNG tank to zero pressure. The mixer (venturi) is installed in the air intake between the air filter and the throttle body which provides single point fuel injection. The mixer creates a negative pressure so the natural gas is sucked out of the regulator as the air volume is increased as the throttle is pushed. An oxygen sensor on the engine's exhaust is monitored by the Millennium controller which controls an electronic valve (stepper motor). The stepper motor is installed on the zero pressure natural gas fuel hose going to the mixer to provide the proper fuel ratio at all times.