Holley 2 Barrel Sniper EFI 2300YouTube Button

Holley Sniper EFI 2300 Self-Tuning Master Kit - Shiny Finish

Holley Sniper 2 Barrel Fuel Injection Conversion - Self-Tuning Master Kit + Handheld Display - Shiny Finish

PART# 550-849K

3 customer reviews
$1,222.95   Suggested Retail
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Holley just brought EFI within range! Introducing Sniper EFI 2300! 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! It also easily adapts to a square flange or Q-jet flange 4bbl intake with a Mr. Gasket adapter P/N 1933 (4150 Square Flange) or 1929MRG (Spread Bore). Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today!


  • 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 (Preset to 58.5 PSI)
  • 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!
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
  • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
  • 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 (Weldable) oxygen sensor flange
  • Sniper EFI Software free to download which allows for realtime tuning
  • Printable throttle body flange template included
  • Patent Pending


BrandHolley Sniper EFI
Emission Code3
Flange Style2300
Fuel Pressure58.5 PSI
Injector Size100 lb/hr @ 58.5 PSI
Inlet / Outlet Size9/16-18 Female O-Ring (AN 6)
MAP Sensor2Bar
Max Horsepower Rating350 Naturally Aspirated
Product TypeSniper 2BBL EFI Kits
Throttle Bore1.6875 (1 11/16ths)
Ford C4/C6
Part Number550-849K

Service Parts


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

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

Tech Resources


Have a question about this product?

  • Question

    Is it possible to use the factory fuel line from the fuel tank installing only the filters and fuel pump near the fuel tank or do I have to use a new fuel line. Return line must be new, that´s clear, because there was no return line before. Ford Torino GT Fastback 289cui. V8 1968. Thx.

    By Joerg B. on March 10, 2018

    That would largely depended on the diameter of your existing fuel line. While it can be done you will want to inspect the entire line for any damage. We recommend a minimum feed size of 3/8''s.
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      Some parts are not legal for use in California or other states with similar regulations.