Nitrous Express Nitrous Oxide Injection System Kit - NX-80004EFI-15 is the ideal solution for car enthusiasts who want to increase engine performance. It provides an instant power increase by injecting nitrogen oxide (NOS) into the engine's combustion chamber. The kit is compatible with EFI (Electronic Fuel Injection) systems and is specifically designed for high performance vehicles. NX-80004EFI-15 increases the efficiency of the engine, while also allowing for faster acceleration and higher horsepower. It comes with all the necessary components for ease of assembly and offers a user-friendly installation process. Tested for reliability and durability, this kit safely optimizes your vehicle's performance. Developed with the engineering expertise of Nitrous Express, the NX-80004EFI-15 is the perfect choice for drivers who want superior performance both on the race track and in everyday use. The Nitrous Oxide Injection System Kit is designed for 4-Cylinder Gasoline EFI engines, provides support up to 50-250 horsepower and comes with a 15 lb NOS bottle. NX Direct Port EFI systems are ideal for users who have modified their engines with high-durability internal engine parts. It uses the patented NX "Piranha" nozzle and can be adjusted up to 300 horsepower. It comes with high-tech distribution blocks as standard and can optionally be offered with "New Generation" rail technology. The nitrous system is delivered as a complete package with the nitrous bottle, stainless bottle mounting apparatus, stainless hard pipes, nozzle, Jetting equipment and all necessary electrical components. Drilling and threading operations are required in the intake manifold to install the system.