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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Holley Terminator X MAX Engine Management Systems 550-926TERMINATOR X MAX MPFI W TRANS & DBW, LS1 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
TERMINATOR X MAX MPFI W/TRANS & DBW, LS1
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 550-926 also has 4L60E or 4L80E Transmission control and 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:
- For GM LS1/LS6 engines with 24x crank reluctor with EV1 injectors and 4L60E/4L80E transmissions, and drive-by wire throttle body control.
- 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
- 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: 24x LS Engine Main Harness - EV1 Injector Harness - DBW Throttle Body 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
Specs
| Brand | Holley EFI |
|---|---|
| Crank Reluctor | 24x |
| Emission Code | 3 |
| Ignition Type | GM LS 24x |
| Injector Connector | Jetronic / Minitimer (Bosch) |
| Product Type | Terminator X Max LS MPFI |
| Terminator LS Options | Fuel, Spark, Drive-by-Wire, Transmission |
| Part Number | 550-926 |
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
4.3 ★★★★★
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Product Reviews
★★★★★ 5
Adequate sponge organizer
Color: Black, Color: Black
This is a black matte metal sponge organizer. It does have a tilted drip tray so the water drips down into your sink. The metal is cheap but effective. For the price, the added organization you get from this item is worth it! Could also be used in a bathroom. There is no mounting hardware included, not even adhesives.
The metal is already warped out of the box. This is not a high quality item, but the price is fair!
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Great dish soap, cloth and scrubbies organizer!
Color: Black, Size: with Dishcloth Holder, Color: Black, Size: with Dishcloth Holder
I love the fact that it holds all my tools for the dishes. It helps to keep the area tidy.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Great organizational tool!
Color: Silver, Size: with Dishcloth Holder
Looks nice and keeps everything in it's place!
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Reviewed in the United States on May 7, 2026
★★★★★ 4
sturdy and they work well
Color: Black, Size: with Dishcloth Holder
my husband been complaining we need something in there to put sponges, etc. in and I’ve agreed with him for two or three years now we bought some different things and none of them really worked. They weren’t what I wanted.
I saw this and bought it and it’s definitely worth the money. It looks great. It’s easy to install sturdy. It’s going to drain easily and it has one of the top little baskets that you can move to wherever you want it I couldn’t ask for anything better this is going to be definitely what we wanted.
I just tried other things that go over the faucet and things like that and they did not look right and they were flimsy so before you buy one of those check this out first if you have enough room by
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Reviewed in the United States on November 22, 2025
★★★★★ 5
Where has this been all my life. Fits a lot. Doesn’t get gross.
Color: Black, Size: with Dishcloth Holder
I don’t know where this thing has been all my life. Over the years I’ve tried so many ways to keep all the dishwashing stuff organized and not dripping on the counter or getting lost in the sink. Every holder I had before would catch water and end up gross. This one actually works. It fits perfectly on the back ledge of my sink, and I love the little spout that angles into the sink. It’s just big enough to clear the edge but small enough that it’s not in the way. The rack for hanging our blue scrubby is my favorite part. There is never a great place for that thing. The rack does come unhooked easily, including if we bump it, but was easily fixed by taking some pliers and just tightening where it clamps on a bit. It holds more than I expected. The bottom is angled so water drains right out through the spout instead of pooling. It’s very nice quality - does not feel cheap. Honestly, I love it more than I thought I would.
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Reviewed in the United States on October 12, 2025