877.352.5355 Contact Us Mon-Sat 10a-6p

Holly Sniper EFI Holley 4150 Super 650, Classic Gold 550-520

Holly Sniper EFI Holley 4150 Super 650, Classic Gold 550-520
Holly Sniper EFI Holley 4150 Super 650, Classic Gold 550-520Holly Sniper EFI Holley 4150 Super 650, Classic Gold 550-520
$2,549.99 ea
NEWARRIVING SOONEstimated Ship Date 03/18/2024 (If Ordered Today)20 Available from HOLLEY PERFORMANCE PRODUCTS as of 02/25/2024
Model: 4008313
Introducing Holley Super Sniper EFI! Looking to convert your blow thru carbureted turbo engine to EFI? Look no further. Holley offers a 650 HP four injector version for lower horsepower applications with a power adder or someone just needing additional sensor inputs. Did we mention the Super Sniper also has full nitrous control built-in? That's right, no need for a separate nitrous controller! Every Super Sniper EFI system also comes with a USB to CAN tuning cable, as well as free downloadable Sniper EFI Software to give you unlimited control of your engine.
  • Advanced boost control is available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs Time – Same popular boost control offered in Holley HP and Dominator EFI systems!
  • Throttle body mounted ECU – no extra boxes to mount
  • OEM Style TPS/IAC and fuel pressure regulator, for years of dependable service
  • User-friendly Boost Control with handheld adjustability
  • Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
  • Progressive or Non-Progressive control strategies
  • Dry or Wet Nitrous Support
  • One +5v Reference Output - +5V Power Supply for 0-5v Sensors
  • High-Resolution Full Color Touchscreen for initial Setup, Tuning, and Gauge Displays
  • Integrated ignition timing control for precise timing curves
  • Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
  • Time or RPM based Timing Retard and much more!
  • One Sensor Ground – Ground supply for 0-5v Sensors
  • 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
  • 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!
  • Compatible with Draw-Thru or Blow-Thru forced induction applications
  • Programmable Target Air Fuel Ratios per Boost level
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
  • 2.5 Bar MAP sensor included which safely works on applications up to 21.5 PSI
  • Programmable inputs and outputs
  • Lean/Rich AFR Cutoff
  • Six Programmable Ground Outputs
  • Only 4 Wiring Connections Required! (Battery +, Battery-, Switched Ignition & RPM)
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Built-in Single stage progressive nitrous control
  • 650 HP version features four 100 Lb/Hr Injectors
E-85 - Not Recommended
Installation Notes:
E-85 - Not Recommended


Download Name File Size



CFM 800
Emission Code 3
Finish Classic Gold
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 2.5Bar
Max Horsepower Rating 650 Forced Induction
Part Type Fuel Injection Conversion Kit
Product Type Super Sniper EFI 650
Transmission 700R4/200R4


Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:

Ask a question about

Holly Sniper EFI Holley 4150 Super 650, Classic Gold 550-520:
Mustang Depot 2024