4-Cyl Direct Port Nitrous System EFI Gasoline (100-150-250Hp) 12LB Nitrous Express NX 80004EFI-12 - USA-NX-80004EFI-12 - 4-Cyl Direct Port Nitrous System EFI Gasoline (100-150-250Hp) The NX direct port EFI systems are for the crowd who have already modified their engines with high strength internal engine parts. These systems utilize the patented NX Piranha nozzle and are adjustable up to 300 Horsepower! Available standard with high tech distribution blocks, optional Next Generation rail technology. Nitrous system comes complete with: Nitrous bottle Stainless bottle brackets Stainless hard lines Nozzles Jetting All necessary electrical components This system requires the drilling and tapping of intake THE NITRO BOTTLE IS EMPTY!