550-874 Super Sniper Stealth 4150 Self-Tuning Fuel Injection System

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HOLLEYPART NUMBER: 510-550-874

550-874 Super Sniper Stealth 4150 Self-Tuning Fuel Injection System

Name: 550-874 Super Sniper Stealth 4150 Self-Tuning Fuel Injection System
Brand: HOLLEY
SKU: 510-550-874
Price: 1691.95 USD
Availability: InStock

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Super Sniper Stealth 4150 - 650 HP

Super Sniper Stealth 4150 Self-Tuning Fuel Injection System

4150 Flange

Supports Up to 650 HP

870 CFM

Programable Inputs/Outputs

Controlled by 3.500 in. Touchscreen

(4) 100 lbs./hr Injectors

Black Finish

Holley 550-874 550-874 Super Sniper Stealth 4150 Self-Tuning Fuel Injection System Features:

Holley 4150 flange EFI carburetor replacement

Supports up to 650 naturally aspirated HP or 600 forced-induction HP using (4) 100 lbs./hr Injectors

870 CFM flow rate

All system wiring exits below the rear fuel injector cover, for a complete stealth installation and appearance

2.5 Bar MAP sensor

Integrated ignition timing control

Throttle body mounted ECU

(4) wiring connections required (Battery +, Battery -, Ignition, RPM)

High-resolution color touchscreen controller

Calibration wizard tunes ECU without the use of a computer or extensive engine tuning knowledge

Genuine Bosch LSU 4.9 wideband oxygen sensor provides realtime fuel map learn

OEM-style throttle position sensor (TPS) and idle air control (IAC)

2.500 in. clamp-on oxygen sensor kit allows easy integration into older exhaust systems

(3) Programmable 0-5 V sensor inputs for oil, fuel, dome or nitrous pressure sensors

(6) Programmable ground outputs

(1) +5 V reference output

(1) Sensor ground

3.280 in. overall height

-8 AN (3/4-16) female O-ring inlet/outlet

Kickdown provisions for GM: TH350, TH400, 200R4, 700R4 Ford: C4, C6

Compatible with Holley Ultra XP Carburetor drop base air cleaners as well as most stock-style air cleaners with air cleaner locator provisions

Installation Notes:

Requires a Holley 510-12-886 external fuel pressure regulator (set to a base pressure of 58.5 PSI)
Use 510-534-247 high-pressure fuel log for simpler installation
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

Fuel Injection Performance with a Carb Appearance

The Sniper EFI Stealth 4150 Self-Tuning Kits from Holley feature all the benefits of electronic fuel injection for a carbureted engine and are a perfect option for streetcars, race cars, off-road vehicles, or anything running up to 650 normally-aspirated or 600 forced-induction horsepower. These kits help eliminate the typical issues associated with carburetors such as cold starts, hesitations, flooding, and vapor lock. Designed to mimic the appearance of a classic Holley Ultra XP Carburetor, all wiring is hidden and comes out the back for a truly stealth-like installation. All units have provisions for popular GM and Ford automatic transmission kick-down brackets. Sniper Stealth kits are available in base kits or master kits that include a complete fuel system.

Part TypeFuel Injection System

Product LineHolley Sniper EFI Stealth 4150-Series Self-Tuning Kits 4-Barrel

BrandHOLLEY

Package Height9.3

Package Width12.5

Package Length14.5

Weight12.7 PG

Part CategoryPerformance Parts

Wiring Harness IncludedYes

Iat Sensor IncludedYes

Venturi Quantity4

Inlet Size-8 AN