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Holley Sniper EFI

Holley Sniper EFI Super Sniper Stealth 650 - Classic Gold

Supports Up To 650HP - 3.5 in. Handheld Monitor - Carburetor Styling

Part # 550-875 Be the first to write a review

Holley Sniper EFI Super Sniper Stealth 650 - Classic Gold

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$1,691.95
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3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

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Holley's Sniper EFI Super Sniper Stealth 650 is the best way to convert your carbureted engine to fuel injection with just 4 simple connections required. With a Stealth 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! Super Sniper can support up to 650HP naturally aspirated or 600HP boosted with 4 100 LB/HR Injectors. We want everything to be as simple as it can be for you! Sniper kits are built and designed to be installed at home in your garage or driveway with limited tools and the support of Holley's comprehensive installation manual and videos. An afternoon in the garage and you will be enjoying improved engine performance, better MPG's and easier starting. After the simple installation it's time to let your Sniper begin the self-tuning process. Our user-friendly calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. You don't have to be a computer wiz or specialize in tuning to use a Sniper EFI system! Use the high resolution 3.5" full color touchscreen for tuning and gauge displays. Sniper EFI is part of a complete ecosystem! Your new Sniper kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body & Digital Dash to unlock the full potential of your build. Complete your fuel injection journey by checking out our full offer of ignition, fueling and accessories!

Features:

  • Bolt on 4150 Flange Carburetor Replacement
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • 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!
  • Only 4 wiring connections required! (Battery +, battery - , switched ignition & RPM)
  • High resolution full color touchscreen for initial setup, tuning, and gauge displays
  • Throttle body mounted ECU (Electronic Control Unit) – no extra boxes to mount
  • Supports Up To 650HP Naturally Aspirated & 600HP Boosted!
  • 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
  • Three programmable 0-5V sensor inputs for oil/fuel/dome or nitrous pressure sensors
  • Six programmable ground outputs for controlling external fans, nitrous or boost control solenoids
  • 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
  • Requires use of external fuel pressure regulator, Holley PN# 12-886 or equivalent, set to a base pressure of 58.5 PSI
  • Integrated ignition timing control improves idle stability, drive-ability, and wide open throttle response
  • 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
  • Also available in black and shiny
Brand Holley Sniper EFI
CFM870
Emission Code3
FinishClassic Gold
Flange Style4150
Fuel Pressure58.5 PSI
Height3.28"
Injector Size100 lb/hr @ 58.5 PSI
Inlet / Outlet Size3/4-16 Female O-Ring (AN 8)
MAP Sensor2Bar
Max Horsepower Rating650 Naturally Aspirated
Model4150 EFI Conversion Throttle Body
Product TypeSuper Sniper Stealth 4150 - 650 HP
Sale CategoryAir and Fuel Delivery
Transmission700R4/200R4
Ford C4/C6
TH350
UPC090127077856
Part Number550-875
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle
Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Holley EFI dealer in your area!
Sniper EFI SD Card Contents
Sniper EFI SD Card Contents
Part # 534-247 is required to complete installation.

Have a question about this product?

  • Question

    What is the differnce between the Super Sniper Stealth and the Sniper Stealth?

    By Donald W. on February 7, 2020

    Answer
    The Super ECU has extra Inputs and outputs, and an 8 injector variation for increased horsepower support on boosted applications.
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    Some parts are not legal for use in California or other states with similar regulations.