Holley HP EFI ECU and Harness Kits 550-628N Engine Management Systems, EFI, Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit
Holley HP EFI ECU and Harness Kits 550-628N Engine Management Systems, EFI, Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit
A$6,167.18
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:17:29
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley, Hilborn, Holley Efi, Retrobright, Terminator X |
| StreetFX SKU | hly550-628N |
| SFX Item ID | 4784514 |
| Accounting SKU | hly-550-628N |
| Manufacturer SKU | 550-628N |
| Manufacturer UPC | 090127030271 |
| Alternative References | 550-628N, HLY-550-628N, HOL550-628N |
Engine Management Systems, HP EFI, ECU and Harness, Up to 16-Injectors, 8-Coils, NTK O2 Sensor, Wideband, CANBUS, Ford, 4.6L, Kit
Holley HP EFI ECU and harness kits allow you to manage automotive functions—like the fuel and ignition of your engine, along with controlling nitrous, boost, or water/methanol. Select the model with options needed for your vehicle application. (Note: some models are engine-specific.)
Features and notes:
• Eight sequentially driven 8:2 peak and hold injector drivers capable of driving up to 16 low or high-impedance injectors are standard
• 8-channel distributorless ignition (DIS) outputs capable of directly driving "smart" ignition coils or Holley DIS coils
• Integrated, single-channel wideband oxygen sensor control. Works with NTK or Bosch sensors. More channels can be added via CAN bus.
• Internal data-logging is standard, with a huge 2GB of memory
• 4-stage progressive nitrous control
• Turbo boost control
• Integrated water/methanol injection control
• Self-tuning fuel table strategy greatly simplifies tuning process
• Individual cylinder fuel and spark control allow you to unlock your engine's potential
• Compatible with 4, 6, and 8-cylinder engines
• Unique lbs./hr.-based fueling strategy greatly simplifies tuning
• Advanced idle, closed loop, and enrichment strategies allow for very stable operation
• Fully potted and can be mounted in the engine compartment or interior
• Sealed automotive and marine-grade connectors
• Allows for use of common OEM sensors, as well as customer sensor calibration input
• Ignition plug-and-play with GM 24x and 58x LSx engines, GM HEI, Ford TFI, magnetic, and hall effect trigger, and other ignition systems
• 1-5 bar MAP sensor capability
• 2-channel knock control sensor inputs for both one and 2-wire knock sensors
• Dedicated fuel and oil pressure inputs
• Control both stepper and PWM idle air control (IAC) motors
• Speed density, Alpha-N, or combination fueling strategies
• Four programmable high or low pulse width modulated (PWM) outputs and four fully configurable inputs can be configured for use
• Lean or rich safety cutoff
| Product Attributes | |
|---|---|
| Brand | Holley |
| Manufacturer's Part Number | 550-628N |
| Part Type | Engine Management Systems |
| Product Line | Holley HP EFI ECU and Harness Kits |
| UPC | 090127030271 |
| Transmission Controller Included | No |
| Boost Control | Yes |
| Traction Control | Yes |
| High Impedence Injectors | Up to 16 |
| Low Impedence Injectors | Up to 16 |
| Fuel Injector Connector Style | USCAR/EV6 |
| Coils | Up to 8 |
| Ignition Coil Connector | Ford 4.6/5.4 2-pin |
| Digital Inputs | 4 |
| Wideband Controller | Yes |
| Wideband Channels | 1 |
| CANBUS Enabled | Yes |
| CANBUS Networks | 1 |
| Knock Control | Yes |
| Knock Channels | 2 |
| Drive-By-Wire Capable | No |
| VVT Control | No |
| Nitrous Control | Yes |
| Launch Control | No |
| Engine Protection | Yes |
| Flex Fuel Compatible | No |
| Multi-fuel Capable | No |
| Data Logger | Yes |
| Oxygen Sensor Included | Yes |
| Reluctor Wheel Tooth Quantity | 35 |
| Display Included | No |
| Handheld Controller Included | No |
| Remanufactured | No |
| Quantity | Sold as a kit. |
| Notes | Control module and sub-harness are required and not included in this kit. Sub harness 558-124 for 2011-12 engines and harness 558-125 for 2013 and up engines. Compatible with TI-Variable cam timing compatible camshafts. Designed to work with a cable driven throttle body. Includes NTK wideband oxygen sensor. |
Compatibility
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