N54 N55 Multi-port Injection Kit

The Black Market Parts Multi-port Injection (MPI) kit, manufactured by Precision Raceworks, is essential for supporting increased power levels in BMW N54 and N55 engines. At the core of this kit are Genuine Bosch Motorsport injectors, meticulously flow-matched both statically and dynamically to an industry-leading tolerance of 2% or better. This precision ensures superior accuracy compared to standard injectors. The injectors are rated at 750cc at 43.5psi, increasing to 1050cc at 72.5psi, enabling support for a wide range of power outputs, from 400whp to 1,000whp. The kit includes stainless OEM-style extended studs and OEM-spec manifold gaskets for the port injection plate. The included fuel lines are constructed with smooth bore PTFE, stainless braid, and nylon braid for compatibility with all fuel types, including E85. Proper tuning is crucial for optimal performance with this kit. A detailed certificate of conformance and a genuine Bosch product certificate are included, providing all necessary flow data for accurate tuning. An external injector controller, such as the Split Second AIC-6 or Motiv Re|Flex Controller, is required for operation. This product is not for sale or use in the state of California on any pollution-controlled vehicle, as per the California Air Resources Board.