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  • N54 Port Injection Conversion
    • Basic Information
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    • Value Proposition vs Standalone ECU
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Value Proposition vs Standalone ECU
Updated Sept 25

    Value Proposition vs Standalone ECU

    We put this page together so our potential customers could get a clear idea regarding the costs associated with converting an N54 engine to port injection. Lets start by discussing the required components for a high performance application between the Nexsys Motorsport Kit (left) vs the MaxxECU Standalone (right).

    • HPFP Block Off Plate

    • Direct Injector Plugs

    • Port Fuel Injector Harness & Signal Controller

    • Port Fuel Injectors

    • Low pressure fuel pump upgrades

    • Boost referenced fuel pressure regulator

    • An intake manifold with port fuel injector bungs

    • 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

    • MHD Tuning flasher license for flashing our custom code

    • HPFP Block Off Plate

    • Direct Injector Plugs

    • Port Fuel Injector Harness

    • Port Fuel Injectors

    • Low pressure fuel pump upgrades

    • Boost referenced fuel pressure regulator

    • An intake manifold with port fuel injector bungs

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

    • Complete engine harness

    • MaxxECU Race ECU

    Now that we have our list we can see that many of the required items are the same and therefore should be excluded from the value proposition going forward (since you would need them in either case). Now we will include prices as of 09/25/2025. Source for MAXXECU PNP Standalone: PNPECU.com.

    • Nexsys Motorsport Port Injection Software - $499.99

    • Signal Controller (comes with our injector harness) - $299.99

    • MHD Tuning flasher license (many users already have) - $120.00

    • MaxxECU Race ECU & PNP Engine Harness - $2552.67

    Effective Total: $799.98 - $919.98

    Effective Total: $2552.67

    Another consideration when comparing pricing is the high import duties associated with the MaxxECU for overseas customers.

     

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