A Complete "Wet" Nitrous System; Everything Is Included For A Safe, Proper Installation Designed to work safely on stock type engines, but is also engineered to perform flawlessly on highly modified turbocharged & supercharged combinations. The ideal nitrous system for any fuel injected vehicle. All major components are factory pre-assembled inside the "Nitrous Management Unit". Easy, plug & play, two-hour installation. ZEX™ Nitrous Systems have an advanced, patented feature called "Active Fuel Control". This feature monitors nitrous bottle pressure & adds or subtracts enrichment fuel so the engine never runs too rich, or too lean, when you engage the nitrous system. ZEX™ "Wet" nitrous systems activate at wide-open throttle using advanced electronics that monitor your engine's throttle position sensor. This makes using your nitrous system very easy and reliable."