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Description
Holley Terminator X MAX Engine Management Systems 550-931TERMINATOR X MAX MPFI W DBW 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
TERMINATOR X MAX MPFI W/DBW
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!
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
- 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
- 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.
Specs
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 58x |
| Emission Code | 3 |
| Ignition Type | GM LS 58x |
| Injector Connector | USCAR (EV6) |
| Product Type | Terminator X Max LS MPFI |
| Terminator LS Options | Fuel, Spark, Drive-by-Wire |
| Part Number | 550-931 |
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]
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4.7 ★★★★★
Based on 1833 reviews
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Product Reviews
★★★★★ 5
Detailed world building
Format: Kindle, Format: Kindle
I was completely immersed in the world that Dani spun so well. The book is filled with details and beautiful descriptions. The tempo and flow of the book was easy to follow. The book follows a strong female business owner who has dealt with prejudices and discrimination. The love story that develops is beautiful.
My favorite line in the book sums it up perfectly. “…she had forgotten, for a moment, what parts she had. She was simply a woman being made love to by another woman.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 5
Sweet and Spicy
Format: Kindle
I really enjoyed this. It is mushy and sweet and very spicy as well. I like how the MCs business is part of it and also the love interest's son. Interesting world building as well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2025
★★★★★ 4
What a spicy lovely tale of love
Format: Kindle
I receive an ARC copy and am leaving my thoughts voluntarily.
I really liked all the other books in this series and it was so nice to see characters I loved again while being introduced to some new faces that I can to love just as much. And I love seeing that some development has occurred! It’s not vital to the story but still nice to see.
The idea of a romance with one character being a single mom isn’t something I see too often. And it’s done so well here. There’s genuine interest in not only the mom but the child as well and becoming a true family, with all feelings considered. I adored seeing the interactions with Theo. And one character is also trans, with some societal pushback they have to struggle though, which makes life all the harder and the sweet scenes all the sweeter.
The spice here is high. But the thing I love about all Dani’s books is the strong emphasis on consent. It’s not there as an afterthought, it is as important as aspect as the physical act! And I adore it. Anyone that argues consent can’t be sexy should read Dani’s books.
The world building is woven into the plot with exploration of history, discussion of the “he said, she said” of historical events, and how knowing the truth is important. I loved seeing the characters uncover and process everything.
That’s probably a huge trait of Dani’s books I adore—there’s room to breathe. They give you the space to really process which adds to the realism. These are character driven books and I love getting to know each one.
Recommend this one and all the ones before it! Just make sure you can handle the spice and the nastiness of how cruel people can be because it pulls no punches.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 14, 2024
★★★★★ 5
Five Stars
Format: Hardcover
Just another good piece to add to my collection. Awesome was excited to get it.
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Reviewed in the United States on December 20, 2014
★★★★★ 5
Five Stars
Format: Hardcover
Awesome
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2014
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