Nitrous Express 20918-00 35-150 HP Single Nozzle Fly-By-Wire System for Chrysler HEMI and SRT8 Wire activated, engineered exclusively for 5.7 and 6.1 Hemis Smart Box technology enables you to install with no hassles. just plug and play Includes the Chrysler Fuel Line Adapter, exclusive only to Nitrous Express Can produce up to 250 wheel horsepower with a simple line upgrade Includes jetting for 35, 50, 75, 100, 125 and 150 horsepower. Also NX Autolearn TPS switch, lightning solenoids, Shark nozzle, nozzle adapter, extra long stainless braided N2O line, stainless bottle brackets, master arming switch