Holley Sniper EFI Self-Tuning Kit - Classic Gold Finish
4 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld EFI Monitor - Classic Gold Finish
9 customer reviews
Holley just brought EFI within range!
Introducing Sniper EFI!
It's economically priced so you can have all the benefits of EFI and still have money to finish or upgrade the rest of your ride! Perfect for street rods, muscle cars, off road trucks or nearly any carbureted vehicle.
Put an end to cold start issues, hesitations, vapor lock, and flooding.
Upgrade to Sniper EFI and get the tactical accuracy of EFI
Features: Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended) Throttle body mounted ECU – no extra boxes to mount Supports up to 650hp with Four 100 Lb/Hr Injectors! 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) Integrated ignition timing control & coil driver 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! Available in base & master kits (Master kits include complete fuel system consisting of; 20ft of 3/8" Vapor Guard Fuel Hose, 12-920 Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!) 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 ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions! A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13 Patent Pending Specs
Brand Holley Sniper EFI CFM 800 Coast Guard Approved Yes Emission Code 3 Finish Classic Gold Flange Style Dual Bolt Pattern Fuel Pressure 58.5 PSI Height 3.28" Injector Size 100 lb/hr @ 58.5 PSI Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6) MAP Sensor 2Bar Max Horsepower Rating 650 Naturally Aspirated Product Type Sniper 4BBL TBI Kits Transmission 700R4/200R4 Part Number 550-516 Service Parts Emissions
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only 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
The following vehicles are considered Racing Use Only Vehicles:
Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles 1968 and newer U.S. manufactured Federally Certified vehicles 1968 and newer Foreign manufactured vehicle
Q&A Have a question about this product? Ask a Question
4.8 out of 5 stars
Be the first to write a review
Write a Review
Straightforward and complete
By Jeffrey B on February 13, 2018
| Verified Owner
Kit was an easy install under the hood. Instructions are clear on many points with helpful illustrations and pictures to walk through installation and initial set up and start. My only complaints are that it was difficult to find information on mating components and fittings and found a lot of helpful information online and on the Holley Snifer Owners Facebook page, and that the manuals included with the kit did not contain all of the information of the online manuals and troubleshooting charts could only be found online.
I am very happy with the system so far. By pairing with the fuel tank kit it made for a clean and simple overhaul of the system.
Super Excited about this project.
By Bob S on February 13, 2018
| Verified Owner
I am super excited to get this project rolling. I have not completed the install yet, but am highly impressed with the Sniper EFI, the detailed documentation provided and the support team that has been ready and willing to answer any of my questions as I prepare. Thank you!
By James M on February 15, 2018
In the middle of the conversion from an Edelbrock and so far the kit has been a simple swap out. Super high quality, very detailed instructions with photos. Can't wait to finish up and get it dailed in!
Great results on a Ford 302. Well worth the cost!
By Josh M on February 15, 2018
| Verified Owner
Holley makes a comprehensive kit! I’ve used a self tuning kit from FiTech as well, and the Holley Sniper kit Includes a lot more of the bits and pieces one would need of starting from scratch. The only annoying thing I found lacking is the usb cable for a direct laptop connection, that’s an extra $50 from Holley. Otherwise you have to pull the sd card from the monitor and plug it into the laptop to view data logging or modify the fuel map and timing curve on the free Holley Sniper tuning software available online. It’s pretty easy to setup and fine tune. I used timing control on my project, if you use a stand alone distributor it would be a very quick and easy install and setup. I converted an Excalibur Cobra from the factory 1994 Ford 5.0 fuel injection it came with to the Sniper injection for a more retro look and easier tuning. More involved than replacing a carburetor, but worked out great. Smooth idle, even with a large cam, and great throttle response. I have already recommended Sniper Injection to a my friends.
great results on a 68 firebird 400
By stephen m on February 16, 2018
| Verified Owner
it has been a very easy install, great to work with. works great with the intank holley fuel pump. only problem is that here in montana I can't take it out on the road and really work it, just need the snow to go away. looks great, ram air induction mates up good. I am ready to go.
By Ken P on February 16, 2018
| Verified Owner
After waiting 2 months for the fuel tank, I’m finally getting it installed! I sure hope it lives up to all the good reviews!
Install was a breeze for the 69 Mach 1
By Ryan R on February 16, 2018
| Verified Owner
Ordered my system along with sniper EFI fuel tank kit and the all in one fuel filter and regulator. Very simple install, the car started right up and is very reliable. Took the car on a road trip from San Diego to Tucson for the zip tie drags, No trouble the entire trip.Still playing with all of its features.
Finally one that works
By Ralph R on March 26, 2018
I have had a 1967 Camaro since 1988. In 1992 I installed a holly two barrel TBI. It worked fine for about 20 years. It had to be adjusted all the time and had a problem with injector life. In 2012 I saw in Summit catalog a self contained EFI system by Professional Products, it was the only one on the market. I bought one and installed it. I had nothing but problems that the techs tried to help me with. It turns out the problems could not be fixed and they pulled the Powerjection III system from the market. In 2015 I bought an FiTech EFI unit, it had problems with high RPM starting and a long time to decay to idle speed. It also would allow the engine to stall after coasting in gear and then pushing in the clutch. Their techs told me I was one of a few people with the issue and they were not going to upgrade their software. I was totally frustrated when I noticed in Summit catalog that Holley had the Sniper EFI system. The Sniper was the easiest to install and has the fewest settings to be programmed. The performance is better than any of the other systems. My only complaint is that Holley should have come out with their product a lot sooner.
LQ4 with Holley efi
By Larry S on October 31, 2018
This does not control spark and firing just fuel the way i understand.Am i right?
*Free Shipping & Handling only offered to the contiguous US on orders over $100.
Some parts are not legal for use in California or other states with similar regulations.