Holley Super Sniper EFI 4150 Self-Tuning Kit 650HP With Polished Finish



  • Four 100 lb./Hr. Injectors
  • 2.5 Bar Map Sensor
  • Lean/Rich AFR Cutoff
  • Simple Calibration Wizard
MSRP $1,732.00
You save 10%

Holley 650 Horsepower Super Sniper 4150 EFI Self-Tuning Kit with a Polished Finish.

If you're looking to convert your vehicle's carbureted turbo engine to an EFI system, then you'll definitely want to order this Holley 650 Horsepower Super Sniper 4150 EFI Self-Tuning Kit with a Polished Finish (550-518), now available here at CJ Pony Parts! Snag your complete kit today!

Holley Super Sniper Self-Tuning Kit Features:
- Four 100 Lb/Hr Injectors
- Compatible with Draw-Thru or Blow-Thru forced induction applications
- Polished Finish
- User-friendly Boost Control with handheld adjustability
- Programmable Target Air Fuel Ratios per Boost level
- Advanced boost control is available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs Time
- 2.5 Bar MAP sensor included which safely works on applications up to 21.5 PSI
- Built-in Single stage progressive nitrous control
- Dry or Wet Nitrous Support
- Progressive or Non-Progressive control strategies
- Lean/Rich AFR Cutoff
- Integrated ignition timing control for precise timing curves
- Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
- Six Programmable Ground Outputs
- Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI) for N/A or Nitrous applications
- Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI
- Only 4 Wiring Connections Required! (Battery +, Battery-, Switched Ignition & RPM)
- High-Resolution Full Color Touchscreen for initial Setup, Tuning, and Gauge Displays
- Simple Calibration Wizard--no laptop required
- The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn
- Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel oxygen sensor flange
- Throttle body mounted ECU--no extra boxes to mount
- USB to CAN Communication cable included for easy laptop tuning of advanced controls
- Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds
- Compatible with Holley EFI analog gauges and electronic dashes

This premium-quality EFI self-tuning kit from Holley was designed specifically to support up to 650HP on forced induction or dry nitrous vehicle applications. Holley understands that you want the best possible performance, so this Super Sniper kit has the ability to control built-in nitrous control, so there's no need for a separate nitrous controller. Your new self-tuning kit comes with USB to CAN tuning cable and free Sniper EFI Software so you'll be able to have unlimited control of your vehicle's engine right from your home computer! Be sure to grab a new electronic high-pressure fuel pump kit (sold separately) when you place your order with CJ's today!

Super Sniper 4150 Kit Includes:
- Holley Sniper EFI 4150 Throttle Body
- High Resolution Full Color Touchscreen Tablet
- Main Harness and Ignition Adapter
- Output Harness
- Bosch LSU Wideband Oxygen Sensor
- Clamp on Oxygen Sensor Kit
- Holley Sniper EFI Software
- Coolant Temperature Sensor
- Air Cleaner Gasket & Flange Gasket

Throttle Body Specs:
CFM: 800
Finish: Polished
Flange Style: 4150
Height: 3.28”
Injector Size: 100 lb/hr @58.5 PSI
Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
Map Sensor: 2.5 Bar
Max Horsepower Rating: 650 Forced Induction
Throttle Bore: 1-11/16”

*This kit is also available in a black (HSEFI4) or gold (HSEFI6) finish.

Please Note: This EFI Kit will require the use of an electric high-pressure fuel pump, this kit will not work with a mechanical fuel pump. For 1965-1968 Mustang applications we recommend using (FTKEFI10) and for 1969-1970 Mustang applications we recommend using (FTKEFI11).

The Holley Motor Company became official in 1903 when Henry Ford persuaded the owners to enter the carburetor business and supply his growing automobile business with fuel system parts. As of today, Holley remains one of the four parts suppliers who still sell to Ford after all these years. With more than a century of experience and an assortment of products available from CJ Pony Parts, you know you're getting the best!

Purchase this premium Holley (550-518) 650 Horsepower Super Sniper 4150 EFI Self-Tuning Kit with a Polished Finish from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Related Categories: Mustang Parts, Mustang Engine, Mustang Throttle Body & Accessories, Mustang Throttle Bodies, Ford Bronco Parts

Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:

  • 1965 and older U.S. manufactured California certified vehicles
  • 1967 and older U.S. manufactured federally certified vehicles

Installation Difficulty


Advanced skill is required for this installation.

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

This product will fit the following F-100 years:

  • 1948,
  • 1949,
  • 1950,
  • 1951,
  • 1952,
  • 1953,
  • 1954,
  • 1955,
  • 1956,
  • 1957,
  • 1958,
  • 1959,
  • 1960,
  • 1961,
  • 1962,
  • 1963,
  • 1964,
  • 1965,
  • 1966,
  • 1967,
  • 1968,
  • 1969,
  • 1970,
  • 1971,
  • 1972,
  • 1973,
  • 1974,
  • 1975,
  • 1976,
  • 1977,
  • 1978,
  • 1979,

This product will fit the following Mustang years:

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