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Description
Holley HP EFI ECU and Harness Kits 550-602HP ECU AND HARNESS LS1 & LS6 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! Stop reflashing your factory ECU every time you make a performance modification. Get Holley EFI today!
HP ECU AND HARNESS LS1 & LS6Looking 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! Stop re–flashing your factory ECU every time you make a performance modification. Get Holley EFI today!
Features:
- Simple Installation - Plug and Play control of GM LS1/LS6 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 and and Bosch wideband 02 sensor designed to be used with GM LS1/LS6 engines with factory GM coils and a 24 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" touchscreen 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!
Application
-
Univesal
Specs
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 24x |
| Emission Code | 4 |
| Ignition Type | GM LS 24x |
| Injector Connector | Jetronic / Minitimer (Bosch) |
| Product Type | HP EFI Kit |
| Part Number | 550-602 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
RHIT exam
Arrived in time and in good condition. I used this to pass my RHIT, it has good information
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025
★★★★★ 5
Exactly what I need for the RHIT exam
I have this book in electronic form from one of my college classes but it was always a nightmare to access! Even with lifetime access to it, I can no longer access it since class is over! After spending over $100 on the virtual version I didn’t want to spend too much on the paper version also, so this was perfect. Near perfect condition. Arrived very quickly. Great price. Plus- the person before me included some helpful (yet faint) answers for me!! Thanks for having this book available at an affordable price!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2023
★★★★★ 5
A great college book at a great price
The price for this book on here is incredible!! This book is soooo expensive and this was the cheapest price!! Overall this book has so much information and is a great book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2019
★★★★★ 4
Good resource
I bought this to prepare for my RHIT exam, gives a good run down of most HIM topics but does not go in depth, repeat does not go in depth at times, but good for quick referencing and seeing how different topics relate. This should not be the only resource to prepare for test. as I said, does not go in depth on topics you need to know a lot about on exam. For example devotes one page to a topic that you could easily read a whole textbook about. For example, there is a chapter on reimbursement. You’re going to want to actually review your text book that is solely about reimbursement methodologies, but as I said a good general resource to give a refresher and maybe get a better understanding on how different HIM topics relate. At times presented better information than you could find using a google search.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2024
★★★★★ 5
Great Deal!!!
I have a strong preference for physical books over their online counterparts. Thank you for this wonderful offer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2025
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