Product Discontinued

HOLLEYPART NUMBER: 510-550-519

550-519 Sniper EFI Super Sniper 650

Name: 550-519 Sniper EFI Super Sniper 650
Brand: HOLLEY
SKU: 510-550-519
Price: 1557.95 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Super Sniper 650

Sniper EFI Super Sniper 650

Bolt-On Self Tuning EFI Conversion

4150 Flange

Supports Up to 650 HP

Forced Induction & Nitrous Compatible

Controlled by 3.500 in. Handheld Color Touchscreen

(4) Fuel Injectors

Black Ceramic Finish

Holley 550-519 Sniper EFI Super Sniper 650 HP Features:

650 HP version features (4) 100 lb./hr Injectors
1250 HP version features (8) 100 lb./hr Injectors

- Compatible with Draw-Thru or Blow-Thru Forced Induction

User-friendly boost control with handheld adjustability
Programmable target air/fuel ratios per boost level
New 2.5 bar map sensor included supporting up to 21.5 PSI

- Built-In Single-Stage Nitrous Controller

Supports dry or wet nitrous applications
Progressive or non-progressive nitrous control
Lean/rich AFR cutoff
Time or RPM based timing retard

- Programmable Inputs/Outputs

(3) Programmable 0-5 V sensor inputs for oil, fuel, dome or nitrous pressure sensors
(6) Programmable ground outputs
(1) +5 V reference output - +5 V power supply for 0-5 V sensors
(1) sensor ground supplies ground for all 0-5 V sensors

Integrated ignition timing control
Simple (4) wire harness – Battery +/-, Ignition, and RPM
Built-in internal fuel pressure regulator
Self-tuning ECU with simple Q&A calibration wizard, no computer required
High-resolution full-color touchscreen for calibration, tuning and data display
Dual pattern bolt-on carb replacement designed to fit 4150 flanges and spread bore manifolds
Compatible with Holley EFI analog gauges and digital dashes

Specifications:

CFM: 800
Height: 3.28 in.
Injector Size: 100 lb/hr @ 58.5 psi
Inlet/Outlet Size: 9/16-18 Female O-Ring (-6 AN)
MAP Sensor: 2.5 Bar
Max Horsepower Rating: 650 hp Forced Induction
Throttle Bore: 1.6875 in. (1-11/16 in.)
Compatible Transmissions: 700R4, 200R4, TH350

Installation Notes:

Forced induction applications will require an additional fuel pressure regulator. Use p/n 510-12-848 for up to 800 hp and p/n 510-12-851 for 900+ hp.
E-85 fuel is not recommended for use with Holley Super Sniper Kits.
For Troubleshooting Tips setting up your New Holley Sniper EFI System, please see this helpful video from Holley Performance.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

EFI Conversion Suitable for Power Adders & Nitrous

The Super Sniper EFI Self-Tuning Kits from Holley feature all the benefits of EFI for a carbureted engine and are a perfect option for street cars, race cars off-road vehicles, or anything running high horse-power, forced induction, or nitrous. Eliminate the typical carburetor cold starting issues such as hesitations, flooding, and vapor lock issues. Super Sniper Kits are available in either four or eight fuel injector kits that can support up to 650HP/1250HP respectively.

The Self-Tuning ECU makes it an easy, no-hassle way to get the most performance out of your vehicle without the use of a laptop computer. Included in each kit is a handheld color touchscreen that controls all functions of the Super Sniper in the palm of your hand. An easy setup wizard will ask you a few questions about your vehicle, create a base map, and start tuning on its own while you drive. Super Sniper even has an integrated single-stage nitrous controller for a complete all-in-one ECU programmer. With available shiny, black ceramic, or classic gold throttle body finishes, the Super Sniper EFI kit brings style, as well as performance under the hood.

Ready to take your high-horsepower build to the next level? The Holley Super Sniper EFI Self-Tuning Kits are purpose-built for serious street machines and race-ready powerplants that demand more from their fuel system. With support for up to 1250 horsepower (naturally aspirated or boosted), this system delivers cutting-edge EFI performance with classic 4-barrel simplicity.

The Holley Super Sniper 1250 is designed for engines that outgrow standard EFI systems. Its 8-injector, 4-barrel throttle body bolts directly onto most 4150-style intake manifolds—making it the ultimate upgrade for traditional carb setups. Whether you’re pushing boost, nitrous, or just raw displacement, the Super Sniper delivers responsive throttle, smooth idle, and rock-solid drivability.

With advanced features like boost control, nitrous timing tables, ignition control, and a full-color touchscreen, the Super Sniper gives you more tuning power—without the laptop. It’s self-learning, easy to install, and engineered to adapt to your engine in real time, so you spend less time tuning and more time driving.

The Holley Super Sniper isn’t just about big power—it’s about smart performance. From race cars to radical street builds, this system gives you the control, reliability, and ease of use that Holley EFI is known for.

Upgrade to Holley Super Sniper EFI Self-Tuning Kits from JEGS and give your engine the precision fuel management it deserves—because when you're building serious power, your fuel system needs to keep up.

Part TypeFuel Injection System

Product LineHolley Super Sniper EFI Self-Tuning Kits 4-Barrel

BrandHOLLEY

Package Height9.3

Package Width12.6

Package Length14.6

Weight12.83 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part Number550-519

Package Qty1

Package TypeEA