Plug & Play Nitrous Performance: All major components are contained in the ZEX_ NMU, which means you won't have any unsightly solenoids or wiring. Worlds Only Smart Nitrous System: Uses actual bottle pressure to regulate the nitrous to fuel ratio, always optimizing the mix. Never too rich, never too lean! Our nitrous kit only activates when you hit full throttle: This means you can sit at the line with the system armed and your hands on the steering wheel. When you hit full throttle, the nitrous automatically kicks in, you don't have to fumble with switches and steering at the same time. When you let off the throttle, the nitrous shuts off. Our difference in approach results in more horsepower per nitrous used through all bottle pressures.