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    550-850D Holley EFI
    550-850D  Holley Sniper EFI Self-Tuning Kit - 2 Barrell Fuel Injection

    Thumbnail Filmstrip of 550-850D Holley Sniper EFI Self-Tuning Kit - 2 Barrell Fuel Injection Images

      Purchase 550-850D Holley Sniper EFI Self-Tuning Kit - 2 Barrell Fuel Injection

      SKU: HLY-550-850D
      550-850D Holley Sniper EFI Self-Tuning Kit - Black 2 Barrell



      • Holley Sniper EFI 2300 Drop-in Return Style Master Kit - Black Finish

      • Holley Sniper 2 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld Display - Black Finish

        Part # 550-850D Be the first to write a review


        This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

        See Emissions Details
        Introducing Sniper EFI 2300 Master Kits, with a Return Drop-in Retrofit Fuel Module. It's perfect for any vehicle that came standard with a 2300 Holley Flange like some Fairlanes, Galaxies, Falcons, Comets, F100s, Javelins, Rebels, Mustangs, Thunderbirds, Cougars and more. It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade your ride! These kits combine the Sniper EFI Self Learning Throttle Body, with an easy to install In-Tank Retrofit Return Fuel Module, 40 ft. of Earl's Vapor Guard Fuel Hose, and the required fittings. The included fuel system places a 340LPH fuel pump in the tank, which can easily be accomplished with basic hand tools.


      • Throttle body mounted ECU – no extra boxes to mount
      • Bolt on 2300 Flange Carburetor Replacement
      • Supports up to 350HP with Two 100 lb./hr. Injectors
      • Equipped with C4 / C6 Ford transmission kickdown lever as well as TH350, 400 and 700R4 provisions
      • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)• Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
      • 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!
      • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
      • Includes complete fuel system consisting of; Sniper EFI Retrofit Return Style Fuel Module; 40 ft of 3/8” Vapor Guard Fuel Hose; stainless steel hose clamps, a post filter, and various Earls fittings and caps.
      • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
      • Integrated ignition timing control & coil driver
      • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
      • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service
      • Included 2.25” 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
      • Patent Pending
      • Sniper Retrofit fuel module installs in any fuel tank from 7” to 12” deep to fit a wide variety of applications
      • The low profile design is only 1.275" thick above the tank mounting surface for added clearance when needed
      • The innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit
      • The clamping system allows you to rotate the unit 360 degrees for easier clocking of the plumbing and wiring locations under your ride
      • Die cast aluminum construction for corrosion resistance and long lasting good looks
      • Ό” NPT ports for a wide variety of plumbing options
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