-10% Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish

Sniper EFI 2300:  Performance EFI for  Engines Under 325 HP

Ok, everyone has been patiently waiting while all of the big-horsepower engine owners have been beating their chests about the benefits of Sniper EFI.  Well, your wait is over.  Holley has come through big-time with the new Sniper EFI 2300 Fuel Injection System.  How big?  Consider first that over 1500 Year/Make/Model/Engine combinations rolled off the factory floor with the Holley 2300 carburetor.  Add to that all of the hot rods that have been fitted with a Holley 2300 since then and virtually any vehicle to which a 2300 can be mounted and you'll recognize that Holley was aiming to please with this new system that makes EFI a bolt-on, self-tuning reality for every one of these.

Installation is well within the skill range of the average shade-tree mechanic.  Bolt on the throttle body, put the linkage in place, connect the power and O2 Sensor, provide an EFI fuel supply. All that's left is walking through the guided setup quiz (with not-so-tough questions like, "what is the displacement of your engine") and the ECU located inside the throttle body itself does the rest.


  • Direct Fit for 2300-style Intake Manifold (adapters available for other manifolds)
  • The ECU is in the Throttle Body--No boxes to mount, no complex wiring harness to run!
  • Connect with as few as 4 wiring connections: Power +/-, Ignition, and RPM Signal
  • Fuel pressure regulator and most sensors are built-in
  • Visually amazing 3.5-inch touchscreen provides both setup and monitoring
  • Self-tuning--no laptop or software required!

Simplify--Order yours as a Master Kit

Want to simplify both your shopping and installation process? Then opt for the Holley Sniper Master Kit! This kit includes virtually everything you will need to convert your carbureted fuel system over to one that will support your new Sniper EFI system: Inline fuel pump, filters, lines, fittings, and more. Adding this option means that there is no guessing, no additional shopping--get what you need right in the same box with your Sniper system, as paired by Holley's professional engineering staff.

A note about express and international shipping of Sniper EFI System with Master Kit:  Because of the way that Holley created the retail packaging for their Master Kits it more than doubles the size of the box.  Although the Master Kit itself only adds 4 lbs to the weight of the shipment, the shipping company charges based on increased size.  Therefore, as a service to our customers who request express and international shipping of their Holley Sniper EFI Master Kit, we will reduce the size of the shipment by removing the master kit components from their retail packaging.  The reduction of shipping cost is automatically reflected in your shopping cart.  If you need your express/international shipment to include the original retail packaging, please notify us and we will be happy to do so at the higher cost of shipping.  Ground shipments are free, of course, and will include the original retail packaging.

Self Tuning

Other than having two injectors rather than four, the new Sniper EFI 2300 gives no ground to the 4-barrel Sniper.  After you run the setup wizard it tunes itself based on your driving.  You can monitor and control all vital functions via the included 3.5-inch touchscreen and never come close to a PC.  But if you are one of those who loves to dig in deep, the new 2-BBL Sniper EFI 2300 can be tuned with the same award-winning software available for it's 4BBL big brother.   Simply put, there is no comparable EFI system software on the market--and it is yours to download at no cost. This added software is not necessary for the vast majority of Sniper EFI users. But there are a few folks out there who wanted full-featured tuning capability. Well, here it is!

What can you do with the laptop software that you can't do with the handheld? Well, you can tune your Sniper to work with boosted engines up to 1 bar of boost (using the 2-bar map sensor that came on the Sniper.) It is important to note that this software deviates from the basic concept of EFI for Everyman. While it is easy to add the required USB Dongle, download the Sniper EFI Software, install, connect, and run, learning EFI tuning is challenging to say the least. But for only the cost of the dongle (the software is available at no cost) you can get started.  And we here at EFISystemPro.Com are excited to guide you in your learning.

Holley Sniper EFI works with the following accessories

Everyone says, "Buy From EFISystemPro.Com". Why?

When you buy it here at EFISystemPro.Com, that means we're on standby to answer your questions. Our level-3 tech support will gladly talk you through any challenge--just try to get that sort of personal service from a big-box auto performance store! Because here at EFISystemPro.Com, our look is high-end professional, but our service after the sale is home-town helpful!

This Sniper EFI 2300 system is now available with Shiny, Black Ceramic, or Classic Gold finish.

Not Sure? Review this product documentation before you buy!

Owners & Installation Manual
Holley Sniper EFI 2300 System

Quickstart Manual
Holley Sniper EFI 2300 System

Application Guide
Holley Sniper EFI 2300 System

Wiring Tips
Holley Sniper EFI System

Boost Control No
DIS Outputs None
Family Sniper
Fueling Strategy Speed Density
Includes Power Harness Yes
Injector Drivers Two
Internal Datalogging 4GB
Knock Control Channels 0
Nitrous Control Yes
Number of Cylinders 4, 6, or 8 Cylinder
User Configurable I/O Yes
User-Selectable MAP Storage No
Water-Methanol Control No
Displays And Controllers
Auto Brightness No
CAN Bus Capable Yes (Specific to Holley ECUs Only)
Case/Bezel Finish Black
Configurable Monitor dozens of pre-configured metrics provided by the ECU, including sensors, air/fuel ratio, switched outputs, drive-by-wire data, and more.
Data Logging Yes
Display Type LCD
Functions Setup, Monitor, Tuning
Gauge/Display Size 3.5 Inch Rectangular
Internal Storage Yes (SD Card)
Touchscreen Yes
Throttle Bodies
Airflow Rate (CFM) TBA
Barrels (BBL) 2
Gaskets Included Yes
IAC Motor Included Yes
Injectors Included Yes
Style Throttle Body Injection
Throttle Bore Diameter (ea) 1.6875 Inches (42.86mm)
TPS Sensor Included Yes
Fuel Injectors
Flow Rate (Lbs / Hr) 100 PPH
Fuel Pressure Regulators
Pressure Range Set (58.5 PSI at idle)
Rebuildable Yes
Style Integrated in Throttle Body
Fuel Pumps
Flow Rate (GPH) Master Kit Only: 67.4 GPH
Flow Rate (LPH) Master Kit Only: 255 LPH
Fuel Type Master Kit Only: Gasoline or E85
Fuel Filters
Element Material Master Kit Only: Paper
Filter Type Master Kit Only: Inline
Micron Filtration Master Kit Only: Prefilter: 20 Micron / Postfilter: 10 Micron
Mounting Bracket Included Master Kit Only: No
Outside Diameter Master Kit Only: Prefilter: 1.94 Inches / Postfilter: 2.17 Inches
Harness Type 7-pin Power/Ignition/Fuel Pump, 10-Pin I/O, Wideband O2, Coolant Temp, CAN Bus (All fixed to Throttle Body)
Terminated Yes
Crank Timing
Sensor Harness Included No (Ignition Adapter Only)
Type Air Temperature, 2 BAR MAP and Throttle Position (Integrated in TB); Coolant Temperature, Wideband O2
Also Included 3.5-inch Touchscreen Display
Application All automobiles with Holley 2300 as original equipment carburetor or appropriate applications that can be adapted to a Holley 2300 footprint with available adapters.
Color Black Ceramic Throttle Body
Emission Code 3
Unit of Sale Kit

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Sniper EFI 2300 Self-Tuning Kit - Classic Gold Finish

  • Views: 864
  • Brand: Holley
  • Product Code: 550-851 | 550-851K
  • Availability: In Stock
  • $999.95
  • $899.95

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