HHO unit VP Box 766 - increase power and expect to save between 10% to 15% city traffic and 10% to 40% on HWY. The VP Box 766 has a fuel vaporizer integrated in the HHO Box. Application designed for 4, 6 and 8 cylinders gasoline vehicles (RVs, Trucks, and Boats & Cars). Work max 30 amps. It is a "plug and play" unit. Inside the box you will find: HHO dry cell; bubbler; dry bubbler; water pump; fan; water tank; fuse breaker; electronic solenoid; PWM integrated and HHO unit control box. The system comes ready to install. It comes with a 25ft hose; quick fitting connectors; 25ft wires; electrical connectors; HHO injector and flash arrestor. This unit is designed to feed the HHO in the PCV Valve using high vacuum to vaporize the fuel in the bubbler.