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Description
HP EFI ECU & Harness Kits - 550-607Overview: 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! Features: Simple Installation Plug and Play control of GM LS2 LS3 LS7 engines. Just plug the harness into your factory
Overview:
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!
Features:
- 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, Jetronic/Minitimer (Bosch 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!
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 58x |
| Emission Code | 4 |
| Ignition Type | GM LS 58x |
| Injector Connector | Jetronic / Minitimer (Bosch) |
| Product Type | HP EFI Kit |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great read
Format: Hardcover
Great read, to get you up to date with the Batman comic’s world.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
Big Beautiful Batman Book
Format: Hardcover, Format: Hardcover
One big beautiful book. If you love good art and fantastic writing, this is for you.
This is my first Omnibus and if you’re someone who hasn’t held one yet… they are big! In a good way
Very excited to dive in, all the stories are organized and there’s some extras in the back of the book!
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Great collection of batman stories
Format: Hardcover
Must have for any batman fan.
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Reviewed in the United States on September 15, 2025
★★★★★ 5
Super happy!!
Format: Hardcover, Format: Hardcover
Great seller! The Batman omnibus arrived in perfect condition, and I really appreciate that it was shipped to my location. Even though the delivery took a bit longer than expected, it was completely worth the wait. The paper quality is incredible, and the packaging and overall product quality are excellent. Highly recommended.
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Reviewed in the United States on December 19, 2025
★★★★★ 5
Can I be a heretic in this world?
Format: Kindle
This world is fun.
This world is interesting.
This world would be fascinating to visit.
And that also holds true with the characters. Fischer is interesting even as a semi-broken former elite businessman who threw it all away just before getting hit by a truck and thrown into the world. The humble and not-so-humble villagers he meets are perfect foils for him. They never felt like they were nothing but tropes. Yes, Roger's wife is sick and he's grumpy and unwelcoming, but there were depths to it. We learn over time who he is as a husband, father and farmer. All of the other human characters have some backstory even if we don't see it on the pages. Its still clearly reflected in their decisions and actions.
And the animal friends of Fischer that slowly gain power and intelligence due to his actions are wonderful.
This is a story that was carefully and lovingly crafted and is definitely one of my favorites for the year to date.
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Reviewed in the United States on April 24, 2024