Holley EFI 550-519
Product details
| Management number | 254735175 | Release Date | 2026/11/07 | List Price | US$551.64 | Model Number | 254735175 | ||
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650 HP Sniper EFI 4 Barrel Fuel Injection Conversion - Self-Tuning Kit + Handheld EFI Monitor - Black Ceramic Finish;<br><br>Introducing Holley Super Sniper EFI!<br>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 NOS control built-in? That's right, no need for a separate NOS 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.;
- 650 HP version features four 100 Lb/Hr Injectors
- Compatible with Draw-Thru or Blow-Thru forced induction applications
- 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 â€" Same popular boost control offered in Holley HP and Dominator EFI systems!
- 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
- Time or RPM based Timing Retard and much more!
- Integrated ignition timing control for precise timing curves
- 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 â€" 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
- 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)
| Manufacturer part number | 550-519 |
|---|---|
| Automotive specialty part type | Fuel Injection Conversion |
| Vehicle fitment type | Universal |
| Brand | Holley Sniper EFI |
| Weight | 11.1 lb |
| Finish | Ceramic |
| Color | Multicolor |
| Items included | Handheld EFI Monitor |
| Automotive parts division | Performance |
| Model | HL550-519 |
| Count per pack | 1 |
| Has written warranty | No |
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