Air and Fuel› Fuel Injection Systems and Components - Electronic

Black Market

N54 N55 Multi-port Injection (MPI) Kit

$689.99

SKU: 601-0015

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Black Market Parts (BMP) N54/N55 Port Injection is a multi-port injection kit designed for supplemental fueling on BMW N54 and N55 engines. It integrates seamlessly for a factory-like appearance and is 100% E85 compliant. The kit includes new, genuine Bosch Motorsport injectors that are flow-matched static and dynamic, with a certificate of conformance providing all necessary flow data for tuning.
Show original supplier description
The Black Market Parts Multi-port Injection (MPI) kit with flex fuel capability is essential for safely supporting the power levels of upgraded turbos on BMWs with N54 and N55 engines. This kit integrates seamlessly, appearing as if it were a factory installed component, and is 100% E85 compliant. It comes with genuine Bosch Motorsports injectors, meticulously flow-matched to within 2% or better both statically and dynamically, ensuring 250% greater accuracy than standard injectors. Each kit includes a detailed certificate of conformance with all necessary flow data for precise tuning. The BMP kit is designed to support builds ranging from 400whp up to 1,000whp. The standard 750cc injectors flow at 43.5psi, increasing to 1050cc at 72.5psi. This kit requires the use of a supplemental injector controller, with options such as the AIC-1 for batch firing, the ReFlex Lite for sequential firing, and the ReFlex Plus for advanced features like CanBus integration and ethanol sensor compatibility. Key specifications include compatibility with all N54 and N55 engines, genuine Bosch Motorsports injectors, and a flow rate of 750cc @ 43.5psi / 1050cc @ 72.5psi. The injectors are compatible with all known fuels and feature an EV6 connection type, working with AIC and JB4 controllers. Stainless steel OEM-style studs and OEM-spec manifold gaskets for the port injection plate are included. The fuel distribution pattern ensures diagonal, equal distribution across all cylinders.
Vehicle Symptoms
  • Engine hesitation under heavy load
  • Loss of power at high RPM
  • Check engine light with misfire codes
  • Poor fuel economy on E85 blends
  • Lean fuel trim readings under boost
Diagnostic Codes
  • P0300 – Random or multiple cylinder misfire Det
  • P0171 – FT Malf (B1)
  • P0174 – FT Malf (B2)
  • P0191 – Fuel Rail Press Snsr A Ckt Range/Perf
  • P0193 – Fuel Rail Press Snsr A Ckt High
Relevant Conversations
  • BMW N54 misfire under boost port injection upgrade
  • N55 fuel system limitations high horsepower
  • Black Market N54 port injection kit review
  • E85 compatibility N54 fuel system upgrade
  • How to install MPI kit on N54 335i
  • N54 fuel rail pressure sensor code P0191 fix
  • N54 vs N55 port injection kit differences
  • Supplemental fueling for upgraded turbos N54
  • N54 lean fuel trim at WOT solution
  • BMS vs Black Market port injection N55

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandBlack Market
Part Number601-0015
CategoryAir and Fuel
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