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Holley 550-511 Sniper EFI Self-Tuning Master Kit 550-511K with Black Finish
510-550-511K
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Sniper EFI Master KitSniper Self-Tuning Black Throttle Body 3.5" Touch Screen Fuel System Kit
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EFI Self-Tuning Kits
Holley 550-511K Sniper EFI Self-Tuning Master Kit with Black Finish Features:
- Dual Pattern bolt-on carburetor replacement, made to fit 4150 Flange & Spread Bore manifolds
- Self-tuning ECU for easy EFI without requiring advanced computer/tuning skills
- 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!)
- Only 4 Wiring Connections Required - Battery +, Battery -, Switched Ignition & RPM
- High-Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Supports up to 650hp with Four 100 Lb/Hr Injectors!
- Throttle body mounted ECU – no extra boxes to mount
- Integrated ignition timing control & coil driver
- 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
- Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
- Includes a complete fuel system consisting of; 20ft of 3/8” Vapor Guard Fuel Hose, 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 real-time Fuel Map Learn!
- OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service
Note: If using a Holley Dual Sync distributor, adapter harness p/n 510-558-493 is required to connect to the Sniper EFI.
- For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance.
Specifications:
Part Type
Product Line
Package Depth
9.70
Package Height
14.80
Package Width
26.50
Part Category
Performance Parts
Part Fitment
Semi Universal
Shipping Weight
21.05
Vendor Part Number
550-511K
550-511K is rated
out of
5 by
24.
Rated 5 out of
5
by
Scubabiker from
Jeggs rocks.
I originally tried to get this directly from holley but they tond me it would be a few months until it shipped. Canceled the order saw Jeggs saying they had one in stock. Ordered it and it arrived in a few days.
Date published: 2022-05-26
Rated 5 out of
5
by
Vaccuum from
New tech/old school
Great product, easy setup. Will buy it again. I installed it on a FE 390. Start ups are awesome and easy. Runs better, runs smoother.
Date published: 2022-03-23
Rated 5 out of
5
by
Big rig from
Sniper FTW
I was a little intimidated but, I followed the directions to the letter and my old pile fired right up without touching the throttle. Also make sure you register for the warranty. Great quality piece!
Date published: 2021-07-09
Rated 5 out of
5
by
JRMANG from
Holley sniper
Replaced carb on a gm 350 marine engine. Wonderful product, hot and cold starts no problem!!! Research how to install properly on your individual Boat application. Instructions were clear and straight forward!!!! My boat engine is better than new!!!!!
Date published: 2021-07-08
Rated 5 out of
5
by
Anonymous from
Great product
Simple install engine cold starts and run awesome now
Date published: 2020-02-15
Rated 5 out of
5
by
Hud1 from
Replaced a Carb
Well after numerous issues with a Carb, I bought this unit. About a 2 day installation when I could work on it. Then setup, program, test and tune went just and described. So far SBC 350 is running good. Will try to get a tune setup on it to improve the overall performance of the unit with the motor setup.
Date published: 2019-05-27
Rated 5 out of
5
by
JHeil from
Significant performance improvement!
I just had this sniper kit along with the matching fuel tank/pump system installed in my 1986 Monte Carlo with a 383 stroker engine and it made a significant performance improvement. The throttle response and acceleration are greatly improved! I am very impressed with this sniper EFI system.
Date published: 2019-03-27
Rated 5 out of
5
by
ScubaSteve from
EASY!!
Very easy to install. I put this on a 454 in my offroad Jeep and it gives me everything I want out of the motor. Instant start ups and throttle response. Runs off the coil on the HEI. clean wiring too.
Date published: 2018-03-21
Will this work on a 351 windsor ?
The Holley 510-550-511K EFI kit can be used on a 351W.
Date published: 2024-03-29
Will this work with an Edelbrock performance intake manifold?
The Holley 510-550-511K EFI kit will fit an Edelbrock Performer intake with square flange.
Date published: 2024-03-26
Will this unit work on a 1983 Chevrolet Monte CL with 305 5L engine?
The Holley 510-550-511K EFI can work on an '83 Monte Carlo. Modification may be necessary.
Date published: 2023-12-08
Will this work on a 454 with a stock tbi injection
The Holley 510-550-511K will work on a 454, but will not work with any factory electronics.
Date published: 2023-11-21
Will this work on a 1968 f100 with a 429 and will I need anything else for the kickdown rod
The Holley 510-550-511K will work with a Ford 429 engine.
Date published: 2023-11-14
Will this kit be compatible with a single flange roots type blower?
The Holley 510-550-511K EFI does not work with a supercharger.
Date published: 2023-10-02
Does this come with the USB adapter to plug into a laptop. I can't find it but bow that I think about it I don't remember if it came with one
The Holley 510-550-511K tbi kit does not come with a USB adapter as a laptop is not required for tuning.
Date published: 2023-07-07
Will this work in a boosted application?
The 510-550-511K Sniper kit does not work with boosted applicaitions.
Date published: 2023-01-30
Breakdown of Included ItemsDimensionsFeatures:Includes a throttle body adapter for better intake tube routing in swap applicationsComes with a GM Type II power steering pump and power steering hard line adaptersThe alternator is relocated closer to the block for more clearance ...
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Some parts are not legal for use in California or other states with similar laws / regulations
Motor Vehicles
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
Tools:
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
Electrical Cords
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.