ZEX Blackout Nitrous Systems are the newest addition tothe ZEX family. With unprecedented looks, performanceand power potential, and like all ZEX nitrous systems, theBlackout kits incorporate the most technologicallyadvanced performance features available, including thepatented ZEX Active Fuel Control. This feature automaticallyadjusts the nitrous fuel enrichment so your enginenever runs too rich or too lean. Power settings vary for eachapplication specific system, and all kits ship complete withappropriate tuning jets, as well as fuel tap fittings, solenoids,filters and all necessary activation electronics.Systems feature all-new black powder-coated bottles, carbon-fiber looking hoses and fittings for a variety of carburetedand fuel injection applications that are perfect forstreet/strip and all out drag-racing applications. For those who already have this kit but are ready to upgrade to more serious horsepower, ZEX offers an expansion kit that turns the Safe Shot into a fullblownwet ZEX Nitrous System capable of safely adding 55-175 horsepower. Upgrade kit includes high-flow fuel solenoid, wet nitrous nozzle, tuning jets,stainless steel braided lines & other necessary components