The Nitrous Express dual stage Diesel nitrous system isn’t just another plug-in chip that floods your engine with raw diesel and covers the car behind you in black smoke. The Nitrous Express systems are engineered to be the safest way to boost horsepower on any diesel engine. Nitrous Express Diesel systems actually cool the exhaust temperatures while boosting horsepower and torque! The Maximizer nitrous controller allows you to apply nitrous flow through either boost pressure, RPM, Time, MPH (Miles Per Hour), or Throttle percentage progression. Infinitely adjustable power levels make the Nitrous Express system the most advanced, safest diesel power booster on the planet. This system includes: Two 15300L Nitrous Solenoids Maximizer 5 Progressive Nitrous Controller High flow braided stainless lines wide open throttle switch 6AN Feedline Master arming switch Relay and relay harness Jetting for up to 500HP 15Lb nitrous bottle with the Lightning 500 Valve Stainless steel bottle brackets.