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Description
EFI Terminator X Max - LS1/LS624x Crank - 1x Cam - EV6 Injectors - Transmission Control - USB/CAN Tuning CableHolley EFI Terminator X Max LS1 LS6 24x Crank 1x Cam EV6 Injectors Transmission 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
Holley EFI Terminator X Max - LS1/LS624x Crank - 1x Cam - EV6 Injectors - Transmission 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 550-916 also has 4L60E or 4L80E Transmission 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!
Not recommended for 4x4 applications with electronic transfer cases. Not compatible with 4L6X transmissions from model year 1995 or before due to year-by-year changes in converter lockup and downshift strategy.
Features:
- For GM LS1/LS6 engines with 24x crank reluctor with EV6 injectors and 4L60E/4L80E transmissions
- 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 Max 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.
- 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
- 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
- Includes: 24x LS Engine Main Harness - EV6 Injector Harness - 4L60E/4L80E Transmission Control 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: 24x
- Ignition Type: GM LS 24x
- Injector Connector: USCAR (EV6)
- Terminator LS Options: Fuel, Spark, Transmission
Links
Instruction Sheet
Instruction Sheet
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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- 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]
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4.1 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Oil them often
Beautiful boards. Wish the charcuterie side had more sections in the smaller boards. Be prepared to oil them often or the cut marks show quite a bit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Just what I expected
Been using these for about a month now. I will say they do scratch very easily. My knives suck, and first use you can see every scratch. I don’t really mind because I feel like that’s expected with wooden cutting boards.
They look pretty, sit pretty, and haven’t split or warped on me yet. They have a good weight to them as well. I imagine you will have some upkeep such as using oil/board butter but I haven’t gotten to that point yet.
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Reviewed in the United States on September 8, 2025
★★★★★ 5
Very nice boards
Great cutting boards. Have handled alot of abuse. The fact that you get 3 sizes is a plus and may be the best part is the golder for them so they can sit on your kitchen counter amd enjoy their beauty when not using them. Do not put them in the dishwasher
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Reviewed in the United States on March 17, 2026
★★★★★ 5
No more plastic in my food
This is the real deal. Get yourself a cutting board maintenance kit and this will last 20 years. Great wood, no micro plastics in your food, easy to clean and maintain. And looks fantastic
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Reviewed in the United States on March 11, 2026
★★★★★ 5
Beautiful Acacia Boards That Actually Feel Premium and Thoughtfully Made
I’ve gone through a lot of wooden cutting boards over the years, and these immediately stood out as feeling much higher quality than most sets in this price range. The acacia wood has a really rich, attractive grain pattern and the boards arrived smooth, solid, and well finished with no rough spots, cracks, or cheap “composite wood” feel.
What initially caught my attention was the fact that these are marketed as non-toxic and free from mineral oil. Most people don’t think much about what wooden kitchen products are treated with, but I appreciated that these use a natural blend instead of petroleum-based mineral oil. The boards had a very clean, natural wood smell out of the box instead of that chemical/oily smell some cheaper boards have.
The three-size setup is honestly perfect for daily kitchen use. I find myself constantly rotating between them:
the large board for meal prep and meats
the medium board for vegetables
the small one for fruit, cheese, garlic, herbs, etc.
The engraved food icons are also a surprisingly nice touch because they help keep things organized and reduce cross contamination without looking tacky.
A few other things I really liked:
They’re lightweight enough to move around easily but still feel sturdy
- The wood is gentle on knives
- The groove catches juices well
- They look nice enough to double as serving boards
- Packaging was clean and plastic-free/minimal
Like any real wood cutting board, you absolutely need to:
- hand wash only
- dry them after use
- occasionally recondition the wood
If you expect dishwasher-safe convenience, these probably aren’t for you. But if you want attractive, natural wood boards that feel healthier and more intentional than cheap plastic boards, these are excellent.
Overall, these feel like a genuinely thoughtful kitchen product rather than generic mass-produced boards with a trendy “eco” label slapped on them. Very happy with them so far.
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Reviewed in the United States on May 14, 2026
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