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Holley Sniper EFI Self-Tuning Kit with Black Finish

Holley 550-511


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Holley Sniper EFI Self-Tuning Kit with Black Finish $999.95
Sniper EFI Self-Tuning Kit
  • Includes Handheld EFI Monitor
  • Black Ceramic Finish
  • Four Fuel Injectors

  • Holley 550-511 Details

    EFI Self-Tuning Kits


    • Bolt On Carburetor Replacement (Designed To Fit Single And Dual Carb Manifolds)
    • Throttle Body Mounted ECU
    • Supports Up To 650hp
    • 4 Wire Vehicle Connection (Battery +, Battery -, Switched Ignition & RPM)
    • Integrated Fuel Pressure Regulator
    • Integrated Ignition Timing Control And Coil Driver
    • Color Touchscreen For Setup And Gauge Views
    • Calibration Wizard - No Laptop Required
    • Self-Tuning ECU

    Note: If using a Holley Dual Sync distributor, adapter harness p/n 510-558-493 is required to connect to the Sniper EFI.


    Engine Make/Size
    Cylinder Head Type
    Fuel Rate
    Manufacturer's Part Number:

    The Holley Sniper EFI Self-Tuning Kits feature all the benefits of EFI, a perfect option for street cars, muscle cars and off-road vehicles. Eliminate typical carburetor cold starting issues, hesitations, flooding and vapor lock. Sniper EFI four fuel injector kits can support up to 650 HP. The Self-Tuning ECU makes it an easy, no hassle way to get the most performance out of your vehicle without the use of a laptop computer, just hook it up and drive! With available shiny, black ceramic, or classic bronze throttle body finishes, the Sniper EFI kit brings style under the hood.

     JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    I have the Edelbrock fuel sump 36032. Will I still need to run a return fuel line to the tank?

    Asked by: Coach GAM
    No, you can use the Edelbrock fuel system with the Holley throttle body.
    Answered by: Rusty B
    Date published: 2018-08-07

    Does this system have the option of running a 4l80e transmission or do I need a separate programmer?

    Asked by: Chucker
    Yes, you will need a seperate controller for the transmission.
    Answered by: Rusty B
    Date published: 2018-07-17

    I have a 1991 Chevy 350 with factory TB. The heads are center bolt but they are not Vortec. What intake and spacer will I need to make the Sniper system work? Could you provide part numbers please?

    Asked by: 59 Apache
    You can use a standard 4 bbl intake like this one - https://www.jegs.com/i/Holley/510/300-64/10002/-1
    Answered by: Rusty B
    Date published: 2018-05-25

    I have a 93 Chevy TBI 454 can I use this system on this motor?

    Asked by: JONZ67
    Yes, you will need a different intake of an adapter for the TBI flange.
    Answered by: Rusty B
    Date published: 2018-05-17

    Will these kits work with turbochargers?Blow thru.

    Asked by: Bobz
    Yes you can use a blow through setup with mild boost, you will need to program the ECU for it.
    Answered by: Rusty B
    Date published: 2018-03-30
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