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#425550870
Holley Sniper 550-870 Stealth 4150 EFI, Shiny
- Designed to be a fully bolt-on 4150 Flange Carburetor Replacement
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation
- The air entry is machined to fit most stock-style air cleaners with air cleaner locator provisions
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$1,363.95
kit
Factory Shipped
$1,516.00
Save $152.05
This part will be shipped by the manufacturer. We estimate this item will ship on or before May 17th.
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Product Summary
Universal Fit, Throttle Body Injection Style, Polished
- Designed to be a fully bolt-on 4150 Flange Carburetor Replacement
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation
- The air entry is machined to fit most stock-style air cleaners with air cleaner locator provisions
- Features high resolution full color touchscreen for initial setup, tuning, and gauge displays
- An included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn
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Key Specs
Injection Style | Throttle Body |
CFM | 870 CFM |
Injector Size | 100 lbs./hr. |
Max Horsepower Rating | 650 |
ECM Included | Yes |
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Holley Sniper 550-870 Details
The Sniper Stealth 4150 EFI system from Holley features 4,100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications?
Features:
- Bolt-on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU – no extra boxes to mount
- Supports up to 650hp with Four 100 Lb/Hr Injectors!
- Includes high-pressure fuel crossover line
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
- Timed spark port for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
- Air entry is machined to fit most stock-style air cleaners with air cleaner locator provisions.
- Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as12-882.
- Integrated ignition timing control
- 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!
- 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 for 2.25" exhaust ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
- available in 3 finishes: Shiny (550-870), Black (550-871), and Gold (550-872)
Charts
Guides & Documents
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Holley Sniper 550-870 Specifications
Holley Sniper 550-870 Specifications
KEY SPECS | |
---|---|
MFG. Part # | 550-870 |
Brand | Holley Sniper |
Injection Style | Throttle Body |
CFM | 870 CFM |
Injector Size | 100 lbs./hr. |
Max Horsepower Rating | 650 |
ECM Included | Yes |
GENERAL | |
Carburetor Flange Type | 4-Barrel Square Bore |
User Tunable | Yes |
Self Tuning | Yes |
Injectors Included | Yes |
Intake Manifold Included | No |
Metering Style | Speed density |
EGR | No |
Throttle Body Included | Yes |
Throttle Body Material | Cast Aluminum |
Throttle Body Finish | Polished |
Venturi Quantity | 4 |
Fuel Pump Included | No |
Fuel Rails Included | No |
Calibration Module Included | Yes |
Wiring Harness Included | Yes |
Fuel Pressure Regulator Included | No |
Distributor Included | No |
MAP Sensor Included | Yes |
IAC Motor Included | Yes |
IAT Sensor Included | Yes |
TPS Sensor Included | Yes |
Finish | Polished |
Use with Power Adder | Yes |
GTIN Code | 090127077610 |
Sold in Quantity | Kit |