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Description
Terminator X 58x/4x EV1 LS MPFI Kit - Without 3.5 Handheld - 550-910TOverview: Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self learning fuel strategies and the proven, race winning technology of Holley EFI at a budget friendly price! Terminator X features real time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and
Overview:
Take control of your LS engine with Terminator X! Don't settle for a junkyard ECU with a cumbersome tuning interface when you can have complete control of your engine, self-learning fuel strategies and the proven, race-winning technology of Holley EFI at a budget-friendly price!
Terminator X features real-time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs are ideal for electric fans, boost control solenoids, progressive nitrous control, and much more. Terminator X comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. These Terminator X kits include a USB/CAN tuning cable instead of the 3.5" Handheld LCD, these kits require the use of the free Terminator X Software for initial setup. The Terminator X Software includes multiple base calibrations to choose from for either naturally aspirated or boosted engines. Also included is Holley EFI's industry-leading, easy to use software suite that allows full laptop access for advanced users. Whether you are building a budget beater or a boosted race car, Terminator X has the features and technology you need at a price that won't break the bank!
Features:
- Designed for GM LS Engines with 58x Crank, 4x Cam - and EV1 Injectors.
- Real-Time fuel map learn, takes the guess work out of tuning your base fuel table.
- High Impedance Injector Drivers will safely power most Stock LS injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
- All of the new Terminator X systems utilize the Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
- MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
- 4 Inputs – 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
- 4 Outputs – Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
- Boost Control – Boost vs Time, Boost vs Gear, Boost vs RPM, Boost vs Speed, Boost Safeties
- Nitrous Control – Single Channel of Wet or Dry, Progressive or Non-Progressive, Rich/Lean Safeties, and target Closed Loop AFR
- On-Board Diagnostic LEDS for: ECU Power – Engine Run – Wideband Status – TPS Calibration – Crank Signal –Cam Signal. Allow you to identify any Critical engine issues at a glance
- Advanced Tables – 4x 1D Tables, 1x 1D per Gear Table, 4x 2D Tables, 1x 2D per Gear Table, can be used for any custom tables you can dream up, such as Flex Fuel Sensor Offset Table, or a custom fuel or oil pressure safety!
- Includes CAN/USB tuning cable allowing you to configure your ECU and Tuning the engine in real time.
- The compact ECU size allows you to mount it virtually anywhere. Remember, diagnostic LEDS must face up!
- Plug and play compatible with more Holley EFI accessories such as; analog style gauges, shift lights, various modules, and coming soon, 12.3" digital dash support!
- Free EFI Tuning Software for complete control of your Terminator X power plant
- Includes: 58x/4x LS Engine Main Harness - EV1 Injector Harness - Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 58x |
| Emission Code | 3 |
| Ignition Type | GM LS 58x |
| Injector Connector | Jetronic / Minitimer (Bosch) |
| Product Type | Terminator X LS MPFI |
| Terminator LS Options | Fuel, Spark |
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
4.7 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 3
Works, Good product, but wouldn't recommend for specifically 3 27inch screens.
Size: Triple, Style: Free-Standing
I purchased this stand to have 3 27inch 2560x1440 monitors, with the side ones angled towards me in a typical 3-monitor setup often seen being used by racing or aviation simulator guys. This stand's arms for the two side monitors are not long enough to have said monitors angled more than 5 to 8 degrees meaning they are forced to be completely linear which is incredibly awkward to try to use because you can barely see or use the screen space on the far edges.
𝐖𝐢𝐭𝐡 𝐭𝐡𝐞𝐬𝐞 𝐬𝐢𝐳𝐞 𝐬𝐜𝐫𝐞𝐞𝐧𝐬, 𝐭𝐡𝐞 𝐨𝐧𝐥𝐲 𝐰𝐚𝐲 𝐭𝐨 𝐡𝐚𝐯𝐞 𝐞𝐯𝐞𝐧 𝐨𝐧𝐞 𝐚𝐭 𝐚𝐧 𝐚𝐝𝐞𝐪𝐮𝐚𝐭𝐞 𝐚𝐧𝐠𝐥𝐞 𝐟𝐨𝐫𝐜𝐞𝐬 𝐭𝐡𝐞 𝐨𝐭𝐡𝐞𝐫 𝐦𝐨𝐧𝐢𝐭𝐨𝐫 𝐭𝐨 𝐛𝐞 𝐢𝐧 𝐩𝐨𝐫𝐭𝐫𝐚𝐢𝐭 𝐦𝐨𝐝𝐞, 𝐤𝐢𝐧𝐝 𝐨𝐟 𝐦𝐞𝐬𝐬𝐢𝐧𝐠 𝐮𝐩 𝐭𝐡𝐞 𝐰𝐡𝐨𝐥𝐞 𝐩𝐨𝐢𝐧𝐭 𝐨𝐟 𝐛𝐮𝐲𝐢𝐧𝐠 𝐭𝐡𝐢𝐬. The product description should not say it can hold 3 27 inch screens because the amount of struggling I had to do to get it to be acceptable was ridiculous.
The stand is... not heavy enough to safely hold monitors of this size either, and additional weight was required ( 2 10lb dumbbells in my case ) configuring the height of your monitors with this stand can be dangerous as well as they could fall down the central post so you have to be extremely careful, but, it is pretty easy other than that.
It is a great option if you don't have a desk with an edge for typical stands ( I don't. ) You can place the stand anywhere, and you don't have to drill through your desk if you really don't want to. The cable clips are a very nice included bonus, and they sent me a replacement without any hassle when I totally effed up my first attempt at setup.
But, I would have shopped harder and got something else if I knew all this prior all the same. Maybe even bought a gigantic curved screen instead.
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Reviewed in the United States on January 8, 2025
★★★★★ 5
Everyone likes the extra outlets and spacing!
Size: 6ft, Color: Yellow
I have a livestream desk shared by a team where we have lots of equipment. We were always running out of outlets and the team had nothing but praise when I installed this 16 outlet replacement. The spacing is perfect for a variety of bricks, plugs and adapters of all sizes. It's metal construction seems very durable and it's easily to mount it solidly to the wall with the wings at each end. The power cord is sufficiently beefy and lighted switch at one end a plus. Overall, we're very happy with its design, capability and value. The extra praise for doing a simple replacement was nice too!
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Reviewed in the United States on December 21, 2025
★★★★★ 5
Heavy-Duty Power for Any Workshop or Garage
Size: 6ft, Color: Yellow
I recently upgraded my workspace with the JUNNUJ 16-Outlet Heavy Duty Power Strip, and it has completely transformed how I manage tools and electronics in my garage.
Why It Stands Out:
Ample Outlets
With 16 wide-spaced outlets, it accommodates bulky plugs, adapters, and chargers without blocking neighboring sockets. Perfect for workshops or garages where multiple tools run simultaneously.
Durable Construction
The full metal housing gives it an industrial-grade feel, and it can handle heavy-duty equipment without bending or warping. Unlike plastic strips, this one feels built to last.
Safety First
Equipped with surge protection and grounded outlets, it keeps both tools and electronics safe. I feel confident plugging in expensive power tools or charging devices without worrying about power spikes.
Practical Length
The long cord allows me to reach multiple corners of my garage without needing extension cords, reducing clutter and tripping hazards.
Professional-Grade Design
Wide-spaced, high-capacity, and metal-built — this is clearly designed for industrial or garage use, not just casual household tasks. It’s heavy-duty without being overcomplicated.
Minor Considerations:
It’s larger and heavier than standard power strips, so it needs a stable mounting spot or surface.
Price is higher than a typical household strip, but for the durability and outlet capacity, it’s worth it.
Bottom Line:
The JUNNUJ 16-Outlet Heavy Duty Power Strip is a powerhouse for garages, workshops, or any space with multiple high-demand devices. Durable, safe, and highly practical, it’s a must-have for anyone who needs reliable industrial-grade power management.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Reliable and affordable
Size: 6ft, Color: Yellow
Great electric plug extension
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Reviewed in the United States on April 13, 2026
★★★★★ 5
Works great
Size: 6ft, Color: Silver
Just what I needed for my Dept 56 Christmas display. In past years, it's been a challenge to find enough open plugs for my display. This power strip completely solved that problem. I wish I had found this sooner.
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Reviewed in the United States on April 23, 2026