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Holley 550-851K Sniper EFI 2300 MASTER Kit - Gold Finish Canada



  • $1,563.86 CAD

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

Bolt on 2 Barrel EFI that won't break the bank!  You asked and Holley delivered! Converting to electronic fuel injection has never been easier with some help from the Sniper EFI 2300. It’s a 2 barrel EFI system capable of supporting up to 350hp. Perfect for any vehicle that originally came with one of our 2300 Holley carburetors, like some classic Mustangs, Cougars, Javelins, Fairlanes, F100s, Thunderbirds, and more.

This is an economically priced EFI system giving you all the benefits of EFI and leaving you with some money left over. Put an end to cold start issues, hesitations, vapour lock, and flooding. Upgrade now and get the accuracy of Sniper EFI today!


Click the video below to see What's in the Box?!? (4 Barrel version)

Introducing the 2 Barrel 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). Bolt-on replacement for popular classic Holley Carburetors such as the 0-4412 or 0-7448. Put an end to cold start issues, hesitations, vapour 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 kick down 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 Colour 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 real-time 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 real-time tuning
  • Printable throttle body flange template included
  • Patent Pending

      Want to read the instructions?  Check them out here!

      Still not enough?  Read the Quick Start guide here!

      Some good wiring advice - don't do any of these!


      Don’t see what you’re looking for? Give us a call toll free: 1-877-471-6700 or visit one of our Speed Shop locations.



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