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BMW N54 Port Injection Conversion Kit

Convert your BMW N54 fuel system from factory piezo direct injection to port injection with Nexsys Motorsport’s integrated hardware and software package.

Off-road vehicle usage only. Not for road vehicles.

What it does

The N54 platform is capable of strong power, but the factory high-pressure fuel delivery system can become expensive to maintain and limiting for performance builds. This kit allows N54 owners to remove the direct injection components and move to a port injection fuel strategy.

Benefits of port injection

• Lower repair and maintenance cost compared with N54 piezo direct injection components.
• More injector flow options for upgraded fuel-system builds.
• Increased usable injection window.
• Fuel passes over the intake valves, helping reduce the need for walnut blasting.
• Ability to remove direct injection components for reduced weight, parasitic loss, noise, and engine bay clutter.

Included

• Press-fit direct injector bore plugs
• Port injector harness and controller
• High Pressure Fuel Pump block-off plate
• Port Injection conversion kit license key required for flashing the vehicle

Required supporting components

• Port fuel injectors
• Boost-referenced fuel pressure regulator
• Intake manifold with port fuel injector bungs
• Fuel line to connect the low-pressure fuel system to the intake manifold rail while maintaining the low-side fuel pressure sensor
• MHD Tuning flasher license for Nexsys custom code
• For high-performance applications: upgraded low-pressure fuel pump(s) and upgraded fuel lines based on power goals

Nexsys N54 Port Injection Conversion Wiki

Nexsys N54 Port Injection Fuel System Calculator

BMW fitment

Draft fitment generated from Kies Vehicle Fitment Database v2.xlsx. Scope: US-market BMW vehicles with exact N54 engine-family data.

Before ordering

• Confirm your vehicle is an N54 application before ordering.
• Plan the full fuel system before installation. Injector, regulator, manifold, line, tuning, pump, and fuel-line requirements vary by build.
• This product is intended for off-road vehicle usage only.

FAQ

Does this kit include everything needed for a complete port injection setup?
No. It includes the Nexsys conversion hardware, harness/controller, HPFP block-off plate, and license key. Supporting fuel-system components are also required.

Is this product street legal?
Nexsys states this product is intended for off-road vehicle usage only and not for road vehicles.

Which BMW engines does this draft fitment cover?
This draft covers exact N54 rows from the Kies US fitment database, including N54B30 and N54B30TO applications.