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. Until recently, nitrous systems for dual 4-barrel intake manifolds have consisted of a couple of plates bolted under the carburetors, equipped with crudebrass spray bars to inject nitrous and fuel into the intake charge. The ZEX system has No bottle in this kit. Tunable from 100-300 HP; Fits all side-by-side, dual 4-barrel intake manifolds; Available for both square flange & Dominator applications