Holley Sniper EFI Self-Tuning Kit - Shiny Finish #550-510

In stock

Sniper EFI 4 Barrel Fuel Injection Conversion - w/ Handheld Sniper EFI Monitor

Put an end to cold start issues, hesitations, vapor lock, and flooding.


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

Brand Holley Sniper EFI

CFM 800

Coast Guard Approved Yes

Emission Code 3

Finish Shiny

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

Model 4150 EFI Conversion Throttle Body

Product Type EFI

Transmission 700R4/200R4


Part Number 550-510

More Information
Part Type Fuel Injection
Product Line Air & Fuel Delivery
Brand Holley Sniper
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