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Holley HP EFI ECU and Harness Kits 550-604

Get Free Shipping with Your Order over $99!
Original Price:

$1,575.95

Sale Price:

$1,451.96

Engine Management Systems, HP ECU and Universal V8 MPFI Harness, Kit

Estimated Ship Date: Today Would you rather pick it up? Select Location

  • Warning! Hurry sale prices won’t last long so take advantage of these Summit Racing Equipment values now!

  • Order this item and get free delivery and handling on your entire order! Oversize fees also waived on this item. Valid on orders shipped in the contiguous United States.

Brand: Holley

Manufacturer's Part Number: 550-604

Part Type: Engine Management Systems

Product Line: Holley HP EFI ECU and Harness Kits

Summit Racing Part Number: HLY-550-604

UPC: 090127666944

Quantity: Sold individually.

Notes: Universal V8 MPFI fit. Requires ignition adapter harness based on ignition type

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

These Holley HP EFI ECU and Harness Kits control units allow you to control the fuel and ignition of your engine, along with additional controls for nitrous, boost, or water methanol.

Features include:

* 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 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

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Holley 558-304 - Holley GM Distributor Wiring Harness Adapters

Click here for more information about Holley 558-304 - Holley GM Distributor Wiring Harness Adapters

Wiring Harness, Distributor, Multi-Port, Each

Part Number: HLY-558-304

Estimated Ship Date: Today

$27.95

$25.86

  • On Sale

    Warning! Hurry sale prices won’t last long so take advantage of these Summit Racing Equipment values now!

Holley 558-305 - Holley EFI Systems Ignition Wiring Harnesses

Click here for more information about Holley 558-305 - Holley EFI Systems Ignition Wiring Harnesses

Wiring Harness, EFI, Ignition Harness, Ford, Kit

Part Number: HLY-558-305

Estimated Ship Date: Today

$65.95

$60.70

  • On Sale

    Warning! Hurry sale prices won’t last long so take advantage of these Summit Racing Equipment values now!

Holley 558-303 - Holley EFI Systems Ignition Wiring Harnesses

Click here for more information about Holley 558-303 - Holley EFI Systems Ignition Wiring Harnesses

Wiring Harness, EFI, Ignition Harness, Magnetic Pickup, Kit

Part Number: HLY-558-303

Estimated Ship Date: Today

$50.95

$48.19

  • On Sale

    Warning! Hurry sale prices won’t last long so take advantage of these Summit Racing Equipment values now!

Holley 558-410 - Holley Ignition Box Wiring Harnesses

Click here for more information about Holley 558-410 - Holley Ignition Box Wiring Harnesses

Ignition Wire Harness

Part Number: HLY-558-410

Estimated Ship Date: 1/5/2015 (if ordered today)

$54.95

$50.87

  • Drop Ship

    This part is normally shipped directly from the manufacturer / Supplier.

  • On Sale

    Warning! Hurry sale prices won’t last long so take advantage of these Summit Racing Equipment values now!

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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