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Description
EFI Terminator X - Gen IV - 58x Crank - 4x Cam - EV6 Injectors - 3.5 in. TouchscreenHolley EFI Terminator X Gen IV 4. 8 5. 3 6. 0 GM Truck Engines and LS2 LS3 24x Crank 1x Cam Multec 2 Injectors USB CAN Tuning Cable 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
Holley EFI Terminator X - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS324x Crank - 1x Cam - Multec 2 Injectors - USB/CAN Tuning Cable
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!
Terminator X ECU's are designed to be mounted with the LED's facing up.
Features:
- Designed for GM LS Engines with 58x Crank, 4x Cam - and EV6 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 ???? ?? 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!adjustable through included 3.5??? f
- The included 3.5" Touchscreen Handheld contains a calibration wizard, that allows you to quickly build a base tune for any LS engine. Additionally the handheld provides internal data-logging and a fully customizable gauge display.
- 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 - EV6 Injector Harness - Terminator X ECU - ECU Main Power Harness - Bosch LSU 4.9 Wideband Oxygen Sensor - Input/Output Harness - and assorted vacuum adapters.
Details:
- Crank Reluctor: 58x
- Ignition Type: GM LS 58x
- Injector Connector: USCAR (EV6)
- Terminator LS Options: Fuel, Spark
Links
Instruction Sheet
Instruction Sheet
Parts Guide
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
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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
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★★★★★ 5
Well, worth it
Well worth it my robot vacuum stopped working properly. It would not find it’s station and would wonder until the battery died. I was able to get a refund and buy a replacement.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Fast and no hassle protection of your expensive product purchases
Had an issue with my expensive floor cleaning robot breaking after less than 2 years (i.e. 1 year in to this 3 year extended protection plan). After submitting an online claim, they sent me a 1 page form to fill-out and provided a shipping label to return the large and heavy robot. Within 3 days, they sent me an email saying they couldn't repair it and provided a FULL-REFUND via an Amazon gift card # which successfully credited to my Amazon account.
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Reviewed in the United States on January 4, 2026
★★★★★ 5
Refunded unrepairable roborock
great way to protect any purchases. RoboRock was unrepairable by Asurion service center and refunded the amount.
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Reviewed in the United States on May 29, 2026
★★★★★ 1
HORRIBLE CUSTOMER SERVICE!
Bought 3 year warranty for new Dyson vacuum for $76. On day 2 the battery for vacuum would not lock into place. In order to have a functioning vacuum as quickly as possible, I purchased a second battery from Amazon. That resolved the problem, proving the battery was the problem, not the vacuum. I filed a claim with Assurion, which included sending photos, receipts, etc. The claim was still "processing" for a week. I got on a chat with Assurion, and for nearly an hour I tried to explain why it was unnecessary for me to return the whole vacuum. I asked for a supervisor, but they advised me to call because no supervisor was available. I called, and after finally getting through the computer system, I got the same run around. Finally a supervisor came on the line to tell me that this was actually an Amazon or a Dyson problem, and that I would need to return the entire vacuum. Also they would not "reimburse" for the battery I purchased. I never wanted reimbursement, I only wanted a functional battery - which is what I paid for. The supervisor told me I could "contact" Amazon. Everyone knows there is no human to contact at Amazon. You can keep the product, or you can return the product. As previously stated, I do not want to return the vacuum. Finally, the supervisor connected my call to Dyson. They refused to help me because I purchased the vacuum through Amazon. After two wasted hours, I ended up just where I suspected I would...without any help at all. I am going to try to "return" the useless Assurion warranty.
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Reviewed in the United States on February 18, 2025
★★★★★ 5
Great service, no hassles
Great service. I'm now buying their protection with every valuable purchase. Keep up the good work.
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Reviewed in the United States on May 3, 2026