Holley Sniper 550-877 Super Sniper Stealth 4150 EFI, 1250HP Black

The Super Sniper Stealth 4150 EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 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 1250hp with Eight 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 part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
• Programmable inputs and outputs
• Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
• Six Programmable Ground Outputs
• One +5v Reference Output - +5V Power Supply for 0-5v Sensors
• One Sensor Ground – Ground supply for 0-5v Sensors
• 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 as 12-882.
• 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.
• Available in 3 finishes: Shiny, Black and coming soon, Gold
• 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

Installation Instructions