With over 100 years of building quality fuel systems, you can trust Holley Sniper with all your electronic fuel injection needs! Holley Sniper EFI is packed with all the features that your car or truck needs. This throttle body fuel injection replaces any square bore or spread bore style 4-barrel carburetor. The built in ECU keeps the wiring neat and tidy with no need to run the computer and associated wiring back into the cab of the vehicle.Connect the 4 necessary wires and you're good to go. The self-learning ECU takes care of setting the baseline tune while the full touchscreen display allows you to fine tune as you please. Sniper EFI throttle bodies utilize OEM style TPS and IAC modules for dependable and serviceable use.
Life is too short to hassle with cold start issues, hesitations, flooding, and carburetor inconsistencies. Leave that old 4-barrel to rest and bring in a new era of performance, reliability, and fun with a Holley Sniper EFI system! Holley Sniper EFI Master Kits include everything you will need to get your new Sniper EFI throttle body setup and running on any of your vehicles.Master Kits include 20 feet of 3/8 EFI fuel hose, in-line electric fuel pump, pre and post filters, return bulkhead, and all of the needed fuel fittings and hardware to get your system plumbed, wired up and running in no time. Fits single and dual plane intake manifolds.
Throttle body mounted ECU - no extra computers to mount or relocate. Capable of supporting up to 650 HP. Simple, 4 wire connection (Battery +, Battery -, Switched ignition & RPM). Built in pre-set fuel pressure regulator. Integrated ignition timing control & coil driver.Color touchscreen for easy setup and gauge displays. Self tuning ECU means you dont have to be a computer/tuning expert to enjoy EFI. By Brian on April 29, 2021. Installed this on a 69 Dart 440 ci. Yes, I recommend this product. By CHUCK on September 05, 2020. UNKNONHAVE NOT BEEN ABLE TO UTILIZE YET. By JimG on June 28, 2019.
Can't wait to get this installed on my Ford 347 stroker motor. By Rev 22:21 on February 15, 2019. Just finished installing system in my 68 Vette 454 6 spd.
Stock heads, stock dual plane manifold. Bought this system because i was sick and tired of regular style carb. Could never get a regular carb to adjust properly. Had 3 different carbs on car after rebuilt engine.
Carbs were always clogging up, sat to long, always needing tunning, and always pinged so had to detune regular carbs. With this system my car has NEVER worked so great.I will say to install system i had to drop gas tank and put in return fuel line. Not real big deal, since ive replaced/replaced engine and put in a T56 tranny. The biggest issue is tun ing the system and engine to system. Although the system says its self learning, which is does once you start driving.
The system learns air fuel ratios and such. But you ave to be able to set up you engine for proper timing(crutial) and proper running engine temp. Example I didnt have proper timing on my initial startup and over heated engine. Didnt break anything but had to figure out what my my issues were.Holley Tech was VERY helpful with the different people that i spoke with. The handheld comes with system(wont work without it), and is kind of complicated. BUT there is ALOT to learn. There is a 16 page install manual and a 50+ page technical spec manual. The second one will definately make your head spins if you never dealt with EFI. Which i never had before. You dont need to an know every detail of the second manual to make it work. I bought the system after reading MANY reviews of people with major and minor problems.
Some people had the worst nightmare trying to install and ended up returning it because never work for them. Even after calling Holley for over months on end. Ive seen Garage Squad on TV putting these kits on vehicles they fix, so i felt confident the product was good. Related Items / Suggested Parts.
Holley Sniper 550-510K EFI 4150 4-Barrel Self-Tuning Master Kit. Holley Sniper 550-516K EFI 4150 4-Barrel Self-Tuning Master Kit. Holley 12-878 EFI Replacement Regulator Kit. Please take advantage of the add to cart button on each listing to get everything in your cart prior to completing checkout.
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Speedway accepts full responsibility for the accuracy of our listings and product representation. The item "Holley Sniper 550-511K EFI 4150 4-Barrel Self-Tuning Master Kit" is in sale since Monday, March 30, 2020. This item is in the category "eBay Motors\Parts & Accessories\Performance & Racing Parts\Auto Performance Parts\Fuel Systems\Other". The seller is "speedway_motors" and is located in Lincoln, Nebraska.This item can be shipped to United States.