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The N54 Port Injection Conversion Kit (PICK for short) is a combination of products and software that have been carefully developed by Nexsys Motorsport. While the N54 platform is relatively easy to make good power on, it struggles with reliability and expensive repair costs normally associated with the high pressure fuel delivery system. The piezo direct injectors that the N54 engine utilizes are unfortunately very unreliable (BMW has gone through 12 different revisions) and extremely expensive. At the time of this writing a new set of index 12 injectors costs $2759. The second weakness in the fuel delivery system is the High Pressure Fuel Pump (HPFP) which is a swash plate piston design that commonly fails and is limited in flow rate for high power applications (especially when ethanol is involved). At the time of this writing a new BMW HPFP is $1051.

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Benefits of Port Injection over Piezo Direct Injection

  • Cheaper to repair and maintain.

  • Many different options available for increased injector flow rates.

  • Increased useable injection window.

  • Intake valves are cleaned by fuel passing over them. No more walnut blasting required.

  • Ability to remove all direct injection components from the engine.

    • Weight reduction.

    • Reduced parasitic losses.

    • Reduced engine noise.

    • Reduced engine compartment clutter.

Components Required for basic Port Injection Conversion

  • HPFP Block Off Plate

  • Direct Injector Plugs

  • Port Fuel Injector Harness

  • Port Fuel Injectors

  • An intake manifold with port fuel injector bungs (ideally mounted on top for proper intercept angles and idle/low load operation and engine smoothness).

  • Fuel line for connecting low pressure fuel system to the intake manifold rail while maintaining the low side fuel pressure sensor.

  • Nexsys Motorsport Port Injection license key (included with our Port Injection Conversion Kit).

  • MHD Tuning flasher license for flashing our custom code.

Additional recommended components for high performance applications

  • Upgraded low pressure fuel pump(s) depending on power goals.

  • Upgraded fuel lines depending on power goals.

  • Boost referenced fuel pressure regulator.

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