Sniper Fuel Injection System 550-870; Stealth 4150 650 HP Throttle Body 870 CFM Polished Aluminum

$1,609.95

Part #: 550-870

Brand: Sniper

UPC: 090127077610

Estimated Ship Date: 6/29/2026 (From manufacturer)

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Sniper Fuel Injection System 550-870K; Sniper EFI Stealth 650 HP Throttle Body 870 CFM Polished Aluminum

Sniper Fuel Injection System 550-870K; Sniper EFI Stealth 650 HP Throttle Body 870 CFM Polished Aluminum

SNI550-870K

$1,899.95

Estimated Ship Date: Today

Details

  • 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!
  • All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
  • Timed spark part 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)
  • An external fuel pressure regulator is required, set to a base pressure of 58.5 PSI, e.g. 12-886.
  • 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‚Äôt have to be a computer/tuning wiz to have EFI!
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
  • OEM Style TPS/IAC 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
  • vailable in 3 finishes: Shiny, Black and coming soon, Gold

Product Description

Supports Up To 650HP - 3.5 in. Handheld Monitor - Carburetor Styling - No Fuel System

Specifications

Fuel Injection System Series:
Stealth 4150
Injection Style:
Throttle Body
Supported Horsepower:
650 HP
Includes Intake Manifold:
No
Includes Throttle Body:
Yes
Throttle Body Mounting Flange:
Square Flange
Throttle Body CFM:
870 CFM
Throttle Body Material:
Aluminum
Throttle Body Finish:
Polished
Includes Fuel Rails:
No
Number of Injectors Included:
4 Injector
Injector Flow Rate:
100 lbs/hr.
Includes Hand-Held Calibration Module:
Yes
Includes ECM:
Yes
Includes Fuel Pump:
No
Includes Fuel Pressure Regulator:
No
Sensors Included:
O2, MAP, IAT, TPS
Quantity:
Sold As Kit

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Alternative Parts

Sniper Fuel Injection System 550-870K; Sniper EFI Stealth 650 HP Throttle Body 870 CFM Polished Aluminum
Sniper Fuel Injection System 550-870K; Sniper EFI Stealth 650 HP Throttle Body 870 CFM Polished Aluminum

Sniper Fuel Injection System 550-870K; Sniper EFI Stealth 650 HP Throttle Body 870 CFM Polished Aluminum

SNI550-870K

$1,899.95

Estimated Ship Date: Today