Sniper 550-877 - Holley EFI Super Stealth 1250 - Black
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Description
Description
Sniper 550-877 - Holley EFI Super Stealth 1250 - Black
Holley Sniper EFI Super Sniper Stealth 1250 - Black
Supports Up To 1250HP Boosted - 3.5 in. Handheld Monitor - Carburetor Styling
If you're looking to make some big power, the Super Sniper Stealth is made for you! Holley's Sniper EFI Super Sniper Stealth 1250 is the best way to convert your carbureted engine to fuel injection with just 4 simple connections required. Super Sniper can support up to 1250HP boosted with 8 100 LB/HR Injectors. With a Stealth 1250 system, you get that carburetor styling but the functionality of a Sniper! This 4-barrel system features a single pattern bolt on design built to fit 4150 flange manifolds. The Super Sniper Stealth ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower. Additionally, this Sniper kit also includes transmission kick down provisions for GM TH350/400, 200R4/700R4, and Ford C4/C6 applications!
- The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
- 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
- Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions.
- OEM Style TPS/IAC, for years of dependable service.
- Six Programmable Ground Outputs
- Bolt on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU – no extra boxes to mount
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
- One Sensor Ground – Ground supply for 0-5v Sensors
- Programmable inputs and outputs
- Integrated ignition timing control
- Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
- Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
- Available in 3 finishes: Shiny, Black and coming soon, Gold
- Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
- Supports up to 1250hp with Eight 100 Lb/Hr Injectors!
- One +5v Reference Output - +5V Power Supply for 0-5v Sensors
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.





