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Holley 550-851K

Holley Sniper EFI Self-Tuning Master Kit


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Holley Sniper EFI Self-Tuning Master Kit $1,159.95
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Sniper EFI Self-Tuning Master Kit
  • Fits Holley 2300 Carb Flange
  • Includes 3.5" Handheld EFI Touchscreen & Fuel System
  • Classic Gold Finish
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    Holley 550-851K Details

    Master Kits


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    Put an end to cold starts, throttle hesitations, vapor lock & fuel flooding 

    Holley has expanded their line of critically acclaimed self-tuning EFI systems to include the Sniper 2300 2-bbl TBI Unit. It’s perfect for any vehicle that came standard with a Holley 2300 Carburetor Flange. Sniper EFI 2-bbl kits can support up to 350HP. The Self-Tuning ECU makes it an easy, no hassle way to get the most performance out of your vehicle without a laptop computer. Just answer a few questions about your engine and it creates the base map, then starts tuning on its own while you drive, no laptop required.

    Choose from either the base kit (includes the EFI module and a handheld touchscreen programmer), or the master kit (includes the EFI module, a handheld touchscreen programmer and a complete fuel system.)


    • Bolt-on 2300 flange carburetor replacement
    • Supports up to 350HP with two 100lb/hr Injectors
    • Equipped with C4/C6 Ford Transmission Kickdown Lever as well as TH350, 400 and 700R4 provisions
    • Accepts many common 5 1/8” OEM or aftermarket air cleaner assemblies
    • Throttle body mounted ECU, no extra boxes to mount
    • Integrated ignition timing control
    • Only 4 wiring connections required (Battery +, Battery - , Switched Ignition & RPM)
    • Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator
    • High resolution color touchscreen for setup, tuning, and gauge displays
    • Simple calibration with touchscreen, no laptop required
    • Self-tuning ECU
    • Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time fuel map learn
    • OEM style TPS/IAC and fuel pressure regulator
    • Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with stainless steel T-Bolt clamps and a stainless steel oxygen sensor flange
    • Sniper EFI Software is free to download which allows for real-time tuning and constant updates

    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.

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

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