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Holley 550-513

Holley Sniper EFI Super Sniper 1250


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Holley Sniper EFI Super Sniper 1250 $1,499.95
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Sniper EFI Super Sniper 1250
  • Bolt-On Self Tuning EFI Conversion
  • 4150 Flange
  • Supports Up to 1250 HP
  • Forced Induction & Nitrous Compatible
  • Controlled by 3.500 in Handheld Color Touchscreen
  • (8) Fuel Injectors
  • Black Ceramic Finish
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    Holley 550-513 Details

    Super Sniper 1250


    • 650 HP version features (4) 100 lb./hr Injectors
    • 1250 HP version features (8) 100 lb./hr Injectors

    - Compatible with Draw-Thru or Blow-Thru Forced Induction

    • User-friendly boost control with handheld adjustability
    • Programmable target air/fuel ratios per boost level
    • New 2.5 bar map sensor included supporting up to 21.5 PSI

    - Built-In Single-Stage Nitrous Controller

    • Supports dry or wet nitrous applications
    • Progressive or non-progressive nitrous control
    • Lean/rich AFR cutoff
    • Time or RPM based timing retard

    - Programmable Inputs/Outputs

    • (3) Programmable 0-5 V sensor inputs for oil, fuel, dome or nitrous pressure sensors
    • (6) Programmable ground outputs
    • (1) +5 V reference output - +5 V power supply for 0-5 V sensors
    • (1) sensor ground supplies ground for all 0-5 V sensors
    • Integrated ignition timing control
    • Simple (4) wire harness – Battery +/-, Ignition, and RPM
    • Built-in internal fuel pressure regulator
    • Self-tuning ECU with simple Q&A calibration wizard, no computer required
    • High-resolution full-color touchscreen for calibration, tuning and data display
    • Dual pattern bolt-on carb replacement designed to fit 4150 flanges and spread bore manifolds
    • Compatible with Holley EFI analog gauges and digital dashes


    • CFM: 800
    • Height: 3.28 in.
    • Injector Size: 100 lb/hr @ 58.5 psi
    • Inlet/Outlet Size: 9/16-18 Female O-Ring (-6 AN)
    • MAP Sensor: 2.5 Bar
    • Max Horsepower Rating: 1250 hp Forced Induction/675 hp N/A
    • Throttle Bore: 1.6875 in. (1-11/16 in.)
    • Compatible Transmissions: 700R4, 200R4, TH350

    Installation Notes:

    Forced induction applications will require an additional fuel pressure regulator. Use p/n 510-12-848 for up to 800 hp and p/n 510-12-851 for 900+ hp.

    E-85 fuel is not recommended for use with Holley Super Sniper Kits. 


    Manufacturer's Part Number:
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    EFI Conversion Suitable for Power Adders & Nitrous

    The Super Sniper EFI Self-Tuning Kits from Holley feature all the benefits of EFI for a carbureted engine and are a perfect option for street cars, race cars off-road vehicles or anything running high horse-power, forced induction or nitrous. Eliminate the typical carburetor cold starting issues such as hesitations, flooding and vapor lock issues. Super Sniper Kits are available in either four or eight fuel injector kits can support up to 650HP/1250HP respectively.

    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. Included in each kit is a handheld color touchscreen that controls all functions of the Super Sniper in the palm of your hand. An easy setup wizard will ask you a few questions about your vehicle, create a base map, and start tuning on its own while you drive. Super Sniper even has an integrated single stage nitrous controller for a complete all-in-one ECU programmer. With available shiny, black ceramic, or classic gold throttle body finishes, the Super Sniper EFI kit brings style, as well as performance under the hood.


    Easy Kits

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.