Nitrous Express All Sport Compact EFI Single Nozzle Nitrous Kit (35-50-75 HP) w/15lb BottleIf you want the best, this is it. The NX Stage 1 EFI nitrous system is the top of the line EFI power booster on the market. From the highest flowing solenoids, to our patented Shark nozzle, this system screams nothing but quality. NX has a system for every EFI car in the world. Available in horsepower levels from 35 50 75 for most 4 and 6 cylinder cars, and up to 150 for 8,10, and 12 cylinder engines. This NX EFI Stage One system comes complete with a