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Description
Terminator X Max 24x/1x EV6 LS MPFI w/ Trans Control w/o 3.5 Handheld 550-919T2Overview: 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
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. 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 MAX has the features and technology you need at a price that won't break the bank!
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 – 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
- 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.
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 24x |
| Emission Code | 3 |
| Ignition Type | GM LS 24x |
| Injector Connector | USCAR (EV6) |
| Product Type | Terminator X Max LS MPFI |
| Terminator LS Options | Fuel, Spark, Transmission |
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
4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
First Rate Office Printer.
Style: WF-4830, Set: DUAL TRAY (500 sheets)/FAX/ADF/PRINT/COPY/SCAN
This is the second Epson product that we have owned. The previous model was still working after 8 years of dependable service when we replaced it. We tried to move up to an Eco Tank model that we purchased locally. The unit would not connect to our wireless network, so we returned it to the store and purchased this model from Amazon.
The overall quality of the output is just as good or even a little better than our old model. This unit is quite a bit faster that our old unit. The unit was also reduced by 34%, making an excellent buy. The jury is still out if it will be good in the ink usage department. Our old unit seemed to need a new cartridge every other week,
I would purchased this model again,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 4, 2026
★★★★★ 1
Love & Hate at the same time
Style: WF-4830, Set: DUAL TRAY (500 sheets)/FAX/ADF/PRINT/COPY/SCAN
I installed, connected to the internet, everything was smooth and the 1st day I printed doc, scanned, sent air etc etc etc, and it was working absolutely great. Next day started asking to perform updates, then it was disconnected to the air computer, I couldn't scan, I connected a cable directly and it didn't work either, becae a nightmare and as last resource, I had to scan through a usb device and then connect to the computer back and forth. Then next days, it was always for updates, downloading more date on my computer as well update the printer, it is like they are spying everything you do with a printer, I just want to use it to print/scan/copy documents or any other info, if it is working just find the 1st day, why these companies begin with harassing the buyer with all these daily updates or connecting hundreds of things to make it work. It was much easier in the past, you just install the program of the printer with a CD and that was it! I had one of those printers before this one and it worked for 12 consecutive years with NO PROBLEMS whatsoever. And the last problem is that IS NOT WORKING AT ALL, I had to stored the printer computer and all my office equipment for 6 months and I plugged in everything and the printer asked for new cartridges, I took them out and they are still full of ink, my fingers completely colored & stained are witnesses & now it says use Epson Support code error 031006 ?!?!?!?!?! There is not a web/ph/any kind of information where do I need to go, I barely use the printer at all, it still has some of the protection plastic and it is already damaged. What a pain. Seriously they should at least add who or where we can ask for help. Now AGAIN buying a new printer because for sure EPSON IS NOT GOING TO HELP ME :((((
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Reviewed in the United States on March 19, 2024
★★★★★ 5
Beats my HP in every phase for less money
Style: WF-4820, Set: 1. SINGLE TRAY (250 sheets)/FAX/ADF/PRINT/COPY/SCAN
Excellent printer. Scans quickly and quietly. Prints nice quality. Set up was a little problematic but i think mostly from operator error.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Great printer...I thought
Style: WF-4820, Set: 1. SINGLE TRAY (250 sheets)/FAX/ADF/PRINT/COPY/SCAN
This unit has really great reviews and many from small biz owners who say it works great and lasts. I've had it for a month and I'm really happy with it. It's much better than my last one. If it lasts as so many other reviews say, it's a great purchase.
**UPDATE**
Loved this printer. Only used it a few times. On the 3rd month, I pushed the button to turn on the printer and there was no response at all. I tried everything. Checked all connections and the outlets. It would not turn on at all. I was out of the return window with Amazon, so I called Epson. They told me they are sending a unit to me and to return mine with the box and label in the shipment. But they said they are NOT SENDING A NEW UNIT, BUT A REFURBISHED UNIT! I am not at all happy about this! I purchased a new printer, not a refurbished printer, and I want a new one! So, I'm really unhappy with Epson right now.
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Reviewed in the United States on November 6, 2025
★★★★★ 1
Not a good choice.
Style: WF-4820, Set: 1. SINGLE TRAY (250 sheets)/FAX/ADF/PRINT/COPY/SCAN
I recently purchased this printer with high hopes of a reliable and efficient printing solution. Unfortunately, my experience with this printer has been nothing short of a nightmare.
Connectivity Woes:
The most glaring issue is its abysmal Wi-Fi connectivity. Despite being placed right next to the router, the printer consistently displays a "Poor Wi-Fi Connection" message. This is in stark contrast to all other devices in my home, which work seamlessly with the Wi-Fi network. Even my old laser printer, which is placed close to the same location, functions without any connectivity hiccups. It's baffling how a modern printer can struggle so much to maintain a stable Wi-Fi connection.
Scanning Nightmares:
The scanning functionality of this printer is equally disappointing. The user interface is far from user-friendly, making it a daunting task to set up scanning to email or computer directly from the printer. This is a basic feature that should be intuitive and hassle-free, but instead, it's a convoluted process that requires unnecessary effort and time.
Ineffective Customer Service:
I reached out to customer service in hopes of resolving these issues. While they guided me through a reset process, the solutions they provided were only temporary fixes. The problems resurfaced shortly after, leaving me back at square one. It's frustrating to invest in a product only to find that the customer service solutions are inadequate and short-lived.
Comparative Performance:
What's more perplexing is that my older laser printer, which is from a different brand, continues to perform flawlessly in terms of connectivity and scanning capabilities. This stark contrast highlights the subpar quality of the Epson.
Final Verdict:
I'm deeply disappointed with this printer and regret this purchase immensely. Its inability to maintain a stable Wi-Fi connection, along with the cumbersome scanning setup and unsatisfactory customer service experience, make this printer a headache rather than a helpful device. I strongly advise against considering this printer if you value reliable performance and user-friendly features. Save yourself the frustration and explore more dependable options on the market.
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Reviewed in the United States on August 10, 2023