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Description
GM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes NTK Oxygen SensorHP EFI ECU Harness Kits GM LS2 3 7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor 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
HP EFI ECU Harness KitsGM LS2/3/7 (58x crank sensor) with USCAR (EV6 Style) connectors on injector harness, Includes Bosch Oxygen Sensor
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!
ECU is certified to ISO 8846, SAE J1171 United States Coast Guard Requirements for Ignition Protection Fire Resistance. Holley HP EFI systems are equipped with 4 programmable inputs and 4 programmable outputs that are ideal for most vehicles with a single power adder. This feature allows the user to configure the system to support a wide range of controls including boost control, progressive nitrous, water/meth injection, speed inputs, fuel pump control, AC inputs, timing retard inputs and various other uses. When selecting an ECU, users need to ensure their planned controls can be run with the 4 inputs and 4 outputs as certain combinations may use more I/Os than are available. If more I/Os are required, users should choose the Dominator VMS.
Software and firmware updates can be downloaded here for free.
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, USCAR (EV6 Style) injector connectors, and NTK wideband O2 sensor, designed to be used with GM LS2/LS3/LS7 engines with factory GM coils and a 58 tooth crank sensor
- The NTK Oxygen Sensor is recommended when using leaded or methanol fuels, high exhaust and forced induction applications or for highest precision feedback
- 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!
Details:
- Crank Reluctor: 58x
- Ignition Type: GM LS 58x
- Injector Connector: USCAR (EV6)
Links
HP EFI Features
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
4.4 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
Great
This Holiday sweatshirt is great, It's made great with soft materials. It fits perfectly not tight and not bulky. It's warm and can be worn over a t-shirt or a long sleeve shirt when it's cold outside. It doesn't twist or ride up. The design is well made and looks great. The colors are bright and look nice. It's great for the holidays but after they're over I'm going to keep wearing this because I like it. It's a great price because with proper care this sweatshirt will last for a long long time.
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Reviewed in the United States on October 14, 2025
★★★★★ 5
As advertised
Size: X-Large, Color: Black
Good fit, great value, looks good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 4
Almost there... just a sizing issue that keeps it from being better!
Size: Large, Color: Blue
The shirt looks nice overall and the quality and color are great. The embroidery is also very well done and gives it a clean, finished look that stands out.
That said, it runs about one size small. I ordered a large (which is my usual size), and while it does fit, it’s noticeably on the tight side and I’m a bit concerned it may shrink after washing. The length is also on the short side—while it just barely fits, it cannot be tucked in at all, which limits how I can wear it.
The material has a slightly silky feel that I find a bit uncomfortable. I would personally prefer a higher cotton content for better softness and breathability, but that’s more of a preference than a dealbreaker.
Overall, it’s a good-looking shirt with great embroidery and solid quality, but the fit and fabric feel may not work for everyone—especially if you’re expecting true-to-size fit and a more traditional cotton feel. It's well made and nice looking... I'd give 5 stars if the sizing was better.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Well made, looks sharp.
Size: Large, Color: Blue, Size: Large, Color: Blue
I picked this up to have another nicer dress shirt. It's made of quality materials. I thought I should have it a little less big than I normally get so I sized down and that was a mistake. That's my fault though. Luckily it fits my wife so she's taking ownership. It fits true to size. The material feels good on your skin. It doesn't have that sheer look that a lot of of button up shirts do. It is is nice and thick. At twenty five dollars it's a good price.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
fits well
Size: Large, Color: Blue
wanted a classic-looking western shirt to add to my wardrobe, and this embroidered button-down really caught my eye. The bright and bold white embroidery stands out beautifully against the dark blue fabric of the shirt. It gives off a very traditional cowboy vibe without feeling outdated or tacky. When I tried it on, I was glad to find that it fits comfortably across the shoulders and chest without feeling overly restrictive. The long sleeves are a great length, and the fabric feels durable enough for casual day-to-day wear. It works perfectly whether you want to tuck it in for a neater look or leave it untucked for something more relaxed. The buttons are secure, and the overall construction feels solid throughout. It is a striking shirt that strikes the right balance between style and everyday comfort.
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Reviewed in the United States on May 19, 2026
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