Holley 550-603 HP EFI ECU & Harness Kit, LS2/LS3/LS7, Bosch O2

Name: Holley 550-603 HP EFI ECU & Harness Kit, LS2/LS3/LS7, Bosch O2
Brand: Holley
SKU: 425550603
Price: 2544.95 USD
Availability: InStock

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$2,544.95

each

Factory Shipped

This part will be shipped by the manufacturer. We estimate this item will ship on or before October 18th.

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Product Summary

Universal Fit, 58x Crank Reluctor, 4x Cam Trigger

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Key Specs

Brand	Holley
Ignition Type	Factory GM
Tuner Style	USB/CAN Tuning Cable

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Details

Looking for a plug and play kit for your GM LS engine? The HP ECU allows you to accurately control the fuel and ignition of your engine plus much more. Got a stock LS engine? Simply download a base map and you're on your way. Got a turbocharged, nitrous fed LS engine on water/meth? This HP EFI kit can control that too!

Simple Installation - Plug and Play control of GM LS2/LS3/LS7 engines. Just plug the harness into your factory sensors, wire the power and grounds and you are ready to take complete control of your LS engine
More Functionality - Provides significantly more functionality than OEM or other competitive ECUs (boost control, nitrous control, water/meth injection, plus a host of additional inputs and outputs to control fans, pumps, relays etc.)
Easy To Use - Laptop programmable ECU includes a variety of base maps that will have you hitting the cruise or track in no time
Ideal For Everything - including stock 5.3L engine swaps or all out, 3,000 horsepower race cars that need a simple and powerful ECU and harness solution
Industry Leading Self Tuning Fuel Strategy - means less time tuning and more time enjoying the power of your LS vehicle
Kit includes ECU, harness, communication cable, software, USCAR (EV6 Style) injector connectors, and Bosch wideband O2 sensor, designed to be used with GM LS2/LS3/LS7 engines with factory GM coils and a 58 tooth crank sensor
ECU is fully potted and can be mounted in the engine compartment or interior
Sealed automotive and marine grade connectors
1-5 Bar MAP sensor capability
Optional plug and play hand-held programmer, 5.7" touch screen and digital gauges are available for ultimate control and vehicle monitoring
ECU is certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance
For a full list of advanced features such as boost, nitrous, water/meth, individual cylinder control and more click the document icon under the product image!

Charts

Installation Instructions (PDF)

Guides & Documents

Engine Control Modules Instruction Sheet (425550603)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Specifications

KEY SPECS
Brand	Holley
Ignition Type	Factory GM
Tuner Style	USB/CAN Tuning Cable

GENERAL
Crank Reluctor	58x
Cam Trigger	4x
Injector Connector	USCAR (EV6)
MAP Sensor Included	No
Transmission Control	No
Oxygen Sensor Style	Bosch
GTIN Code	090127666937
Sold in Quantity	Kit