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Holley 550-871 Sniper EFI Stealth 4150 Black

Original price was: $1,467.99.Current price is: $100.00.

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SKU: CNMT35378336749 Category:

The Holley 550-871 Sniper EFI Stealth 4150 system features Four 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower!

This Black Finish Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications.

For a complete installation, Master Kit part # 550-870K includes a complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8″ Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware, and bulkhead fitting to return fuel into the tank!

Holley 550-871 Sniper EFI Stealth 4150 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!
  • 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, as well as 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 dont have to be a computer/tuning wiz to have EFI!
  • The Holley 550-871 Sniper EFI Stealth 4150 includes a Genuine Bosch LSU 4.9 Wideband Oxygen Sensor. This 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 as well as a Stainless Steel (Weldable) oxygen sensor flange

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