Using this fuel injector and fuel rail upgrade kit is easy. First, make sure your vehicle is turned off and cool. Locate the existing fuel rail and carefully remove it. Then, install the new fuel rail with the 1000cc injectors, ensuring a proper fit. When using this kit, always use fuel that is compatible with e85 to avoid damage. For maintenance, regularly check the connections for any signs of leaks or looseness. If you notice any issues, stop using the vehicle and have it inspected. Keep the kit clean and dry to prolong its lifespan.