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Holley 550-511

Holley Sniper EFI Self-Tuning Kit with Black Finish


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Holley Sniper EFI Self-Tuning Kit with Black Finish $999.95
Out of stock
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:

    Self-Tuning Fuel Injection Conversion

    The Holley Sniper EFI Self-Tuning Kits feature all the benefits of EFI, and are 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.


    • Bolt-on EFI system carburetor replacement
    • Self-tuning ECU
    • Supports up to 650 HP with (4) 100 lb. hr. injectors
    • Integrated ignition timing control and coil driver
    • High-Resolution full-color touchscreen 

     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: 2018-12-15
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