This four stage NX Dry Direct Port System provides nitrous directly into each cylinder through four sets of high flow NX Dry Nozzles. This system is designed to be used with an engine management system that can add nitrous enrichment through the engine's fuel system. A jet card with lbs/hr flow data for each horsepower setting is provided to aid in tuning your engine management systems nitrous enrichment settings. Includes eight billet aluminum and carbon fiber Lightning Nitrous Solenoids, thirty two NX Dry Nozzles, 6an nitrous feedline, jets for 100-600hp per stage, WOT switch, relay, relay harness and all necessary hardware to complete the installation.