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Holley HP EFI ECU and Harness Kits 550-601N Engine Management Systems, EFI, Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, O2 Sensor, for GM TPI, Stealth Ram, Kit

SKU: HLY550-601N

Engine Management Systems

Holley HP EFI ECU and Harness Kits 550-601N Engine Management Systems, EFI, Harness, Up to 16-Injectors, 8-Coils, Four Digital Inputs, O2 Sensor, for GM TPI, Stealth Ram, Kit

SKU: HLY550-601N

Engine Management Systems
A$5,975.83
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

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

Part Type

Engine Management Systems

Data: v4.2 - Upd: 2026-10-13 18:48:01

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
550-601N
Product Attributes - Part Type
Engine Management Systems
Product Attributes - Product Line
Holley HP EFI ECU and Harness Kits
Product Attributes - UPC
090127687444
Product Attributes - Transmission Controller Included
No
Product Attributes - Boost Control
Yes
Product Attributes - Traction Control
Yes
Product Attributes - High Impedence Injectors
Up to 16
Product Attributes - Low Impedence Injectors
Up to 16
Product Attributes - Fuel Injector Connector Style
Jetronic/Minitimer/EV1
Product Attributes - Coils
Up to 8
Product Attributes - Digital Inputs
4
Product Attributes - Wideband Controller
Yes
Product Attributes - Wideband Channels
1
Product Attributes - CANBUS Enabled
Yes
Product Attributes - CANBUS Networks
1
Product Attributes - Knock Control
Yes
Product Attributes - Knock Channels
2
Product Attributes - Drive-By-Wire Capable
No
Product Attributes - VVT Control
No
Product Attributes - Nitrous Control
Yes
Product Attributes - Launch Control
No
Product Attributes - Engine Protection
Yes
Product Attributes - Flex Fuel Compatible
No
Product Attributes - Multi-fuel Capable
No
Product Attributes - Data Logger
Yes
Product Attributes - Oxygen Sensor Included
Yes
Product Attributes - Display Included
No
Product Attributes - Handheld Controller Included
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Includes NTK wideband oxygen sensor. Designed for use with GM TPI and Holley Stealth Ram, includes HEI adapter.

Reference Information

Brand Name/s Holley
StreetFX SKU hly550-601N
SFX Item ID 4782709
Supplier Item Code 4782709
Manufacturer SKU 550-601N
Manufacturer UPC 90127687444
Alternative References HOL550-601N, 16-Injectors, 8-Coils

Compatibility

Application Data
  • UniversalYes

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