Product Summary

Universal Fit, Throttle Body Injection Style, Gold

    Key Specs

    MFG. Part #550-512
    BrandHolley Sniper

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    Want to convert your blow thru carbureted turbo engine to EFI? Well take a look what Holley has for you! The Super Sniper 4150 EFI systems features 8, 100LB/HR fuel injectors capable of supporting up to 1250 HP on forced induction or nitrous applications. Toss that nitrous controller away because the Super Sniper also has full nitrous control built-in! Every Super Sniper EFI system also comes with a USB to CAN tuning cable, as well as free downloadable Sniper EFI software to give you unlimited control of your engine.

    • 1250 HP version features eight 100 Lb/Hr Injectors (Forced Induction)
    • The 800 CFM Main Body will support 700 Horsepower Naturally Aspirated
    • Compatible with Draw thru or blow thru forced induction applications
    • Built-in Single stage progressive nitrous control
    • Programmable inputs and outputs
    • Integrated ignition timing control for precise timing curves
    • Only 4 Wiring Connections Required! (Battery +, Battery-, Switched Ignition & RPM)
    • Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI) for N/A or Nitrous applications
    • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI
    • High-Resolution Full Color Touchscreen for initial Setup, Tuning, and Gauge Displays
    • Simple Calibration Wizard (Answer a few questions about your engine, and it creates the base map, then starts tuning on its own!) - NO laptop required
    • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn
    • OEM Style TPS/IAC and fuel pressure regulator, for years of dependable service
    • Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
    • Throttle body mounted ECU – no extra boxes to mount
    • USB to CAN Communication cable included for easy laptop tuning of advanced controls
    • Compatible with Holley EFI analog gauges and electronic dashes


    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


    MFG. Part #550-512
    BrandHolley Sniper
    Carburetor Flange Type4-Barrel Square Bore
    Injection StyleThrottle Body
    User TunableYes
    Self TuningYes
    Injectors IncludedYes
    Injector Size100 lbs./hr.
    Intake Manifold IncludedNo
    Metering StyleSpeed density
    CFM800 CFM
    Throttle Body IncludedYes
    Throttle Body MaterialCast Aluminum
    Throttle Body FinishGold
    Venturi Quantity4
    Fuel Pump IncludedNo
    Fuel Rails IncludedNo
    Calibration Module IncludedYes
    ECM IncludedYes
    Wiring Harness IncludedYes
    Fuel Pressure Regulator IncludedYes
    Distributor IncludedNo
    MAP Sensor IncludedYes
    IAC Motor IncludedYes
    IAT Sensor IncludedNo
    TPS Sensor IncludedYes
    Emission Code3
    Use with Power AdderYes
    Venturi Diameter44.45mm
    Max Horsepower Rating1250
    Throttle Body StyleThrottle Body Injection (TBI)
    Throttle Body Barrels4-Barrel
    GTIN Code090127039656
    Sold in QuantityKit