Sniper EFI 550-871 Stealth 4150 Self-Tuning EFI System - Black

Name: Sniper EFI 550-871 Stealth 4150 Self-Tuning EFI System - Black
Brand: Sniper EFI
SKU: S2V-550871
Price: 1649.95 USD
Availability: InStock
Rating: 4.3 (9 reviews)

(Ford F-150 1975-79, 1984-87, Mustang 1964-73, 1983-85, F-250 1955-66, 1973-79, 1983-87, Bronco 1984-87, Thunderbird 1955-76 + 581 more models)

Manufacturer

Part Number

550-871

9 reviews

Sale Price

$1,649.95

In Stock (10+)

Usually delivered within 2 days

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Show details for Sniper EFI 550-871 Stealth 4150 Self-Tuning EFI System - Black

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Product Details

The Sniper EFI Stealth 4150 brings modern electronic fuel injection to carbureted engines with a simple bolt-on installation. This self-tuning EFI system features integrated ignition timing control and a throttle body-mounted ECU that eliminates the need for additional control boxes. Designed as a direct replacement for 4150-flange carburetors, the Stealth 4150 supports engines up to 650 horsepower using four 100 lb/hr fuel injectors.

Key Features:

Self-tuning ECU automatically learns and adjusts fuel maps in real-time using included Bosch LSU 4.9 wideband oxygen sensor
High-resolution full-color touchscreen for initial setup, tuning adjustments, and gauge displays
OEM-style throttle position sensor (TPS) and idle air control (IAC) for reliable, long-term performance
Simplified installation with only 4 wiring connections required: Battery +, Battery -, Switched Ignition, and RPM signal
Integrated ignition timing control eliminates need for separate timing controller
Compact throttle body-mounted ECU design saves installation time and space
Air entry machined to accommodate most stock-style air cleaners with locator provisions
Direct bolt-on replacement for 4150-flange carburetors

The Sniper Stealth 4150 combines the performance benefits of electronic fuel injection with the simplicity of a self-learning system, making it ideal for enthusiasts who want modern fuel delivery without complex tuning requirements. The black finish provides a stealthy appearance that complements most engine bay aesthetics.

Products specifications

Fits

Ford F-150 1975-79, 1984-87, Mustang 1964-73, 1983-85, F-250 1955-66, 1973-79, 1983-87, Bronco 1984-87, Thunderbird 1955-76, F-350 1955-79, 1983-87, Galaxie 500 1962-64, 1968-74, F-100 1955-66, 1973-76, 1979, Fairlane 1955-70 + 577 more models

Accelerometer Support

Boost Control

Brand

Holley Sniper EFI

CAN-BUS Support

CFM

870

Coil Per Cylinder Ignition Support

Datalogging Support

Yes

Distributor Included

Dry Nitrous Control

Yes

e85 Support

EGT Support

Emission Code

Finish

Black

Flange Style

4150

Forced Induction Support

Yes

Fuel Filter Included

Fuel Hose Included

Fuel Injectors Included

Yes

Fuel Pressure

58.5 PSI

Fuel Pressure Regulator Included

Fuel Pump Included

Grade Type

Performance

Height

3.28"

Ignition Timing Control

Yes

Individual Cylinder Fuel Corrections

Injector Size

100 lb/hr @ 58.5 PSI

Inlet / Outlet Size

3/4-16 Female O-Ring (AN 8)

Intake Manifold Included

Knock Retard Support

MAP Sensor

2 Bar

Max Horsepower Rating

650 Naturally Aspirated

Model

4150 EFI Conversion Throttle Body

Multi-Stage Nitrous Control

Yes

Part Type

Fuel Injection Conversion Kit

Product Type

Sniper Stealth EFI 4150

Progressive Nitrous Control

Yes

Self-Tuning

Yes

Sub Category

Service Kits

Throttle Position Sensor Included

Yes

Traction Control Support

Transmission

700R4/200R4, Ford C4/C6, TH350

User-Tuneable

Yes

Warning

California Proposition 65

Wet Nitrous Control

Yes

Quick and easy to use

Richard S

Easy 2 Thumbs up !

Jeff O

Simple checkout

Glenn I

Everything was great, packed very well. I appreciate it

Jacob G

REAL GOOD FEDX SLOW

george S

Was awesome

Linn D

Easy checkout

Claudia G

All good

John I

Vaclav G

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