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Description
EFI Terminator X Max - Gen IV 58x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - USB/CAN Tuning CableHolley EFI Terminator X Max Gen IV 4. 8 5. 3 6. 0 GM Truck Engines and LS2 LS3 58x Crank 4x Cam EV6 Injectors Drive By Wire Throttle Body Control 3. 5 in. Touchscreen Overview Take control of your LS engine with Terminator X Max! 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
Holley EFI Terminator X Max - Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS358x Crank - 4x Cam - EV6 Injectors - Drive-By-Wire Throttle Body Control - 3.5 in. Touchscreen
Overview
Take control of your LS engine with Terminator X Max! 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 Max 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. Part number 550-931 also has Drive-By Wire Throttle Body control. Terminator X Max comes fully loaded with base maps for common LS engine combinations to get you out of the garage and on the road/track fast. The 3.5" touch screen LCD handheld contains an easy to use calibration wizard as well as tuning and gauge display functions. 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 MAX 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. Designed to work with GM Throttle body P/N's - 12570790 and 12580760 Designed to work with GM Throttle Pedal P/N - 10379038
Features:
- Designed for GM 4.8/5.3/6.0 LS Truck Engines and LS2/LS3 with 58x Crank, 4x Cam and a Drive-By-Wire Throttle Body, with 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.
- On-Board 1bar MAP sensor, is perfect for N/A or Nitrous engine combos. If your combination requires a 2+Bar, we recommend GM 12592525, and our adapter part number 558-416.
- 4 Outputs ???? Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
- 4 Inputs ???? 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake
- 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
- 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!
- 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
- 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
- Recommended Pedal part number - 10379038
- Includes: 58x/4x LS Engine Main Harness - EV6 Injector Harness - DBW Throttle Body Harness - Terminator X MAX 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, Drive-by-Wire
Links
Instruction Sheet
Instruction Sheet
Parts Guide
Shipping Notes
- Free Standard Shipping on $100+ Orders 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]
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★★★★★ 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
★★★★★ 5
Asurion protection - I approve
Asurion was able to keep me informed from the start of the return process to its conclusion. They were very courteous and understanding. They resolved the refund swiftly and I had no trouble at all redeeming.
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Reviewed in the United States on April 6, 2026
★★★★★ 5
Great Vacuum for Pet Households
Color: Nordic Blue/Space Grey, Style: Miele Guard L1
Excellent vacuum for houses with pets and carpet. It’s outrageously powerful and is light and easy to maneuver around. The color is a perk too, looks great.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Great vacuum
Color: Nordic Blue/Space Grey, Style: Miele Guard L1
Bought this to replace a Dyson, and I love it! Strong suction and super quiet. I was especially interested in this vacuum because of allergies and wanted better filtration to keep dust down, and this succeeded. I got no dust blowing around and the house doesn’t smell like dog after vacuuming. I did buy the Miele hepa filter since that does not come with this vacuum. Great purchase for allergies - Worth the money!
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Reviewed in the United States on April 11, 2026