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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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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
4.9 ★★★★★
Based on 1528 reviews
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Product Reviews
★★★★★ 5
Perfect Balance of Comfort & Support!
Color: Soft, Size: Standard(24"×16"×5.5")
I absolutely love this pillow! The Talalay latex feels incredibly supportive while still being soft and comfortable. Unlike memory foam, it doesn't trap heat or give off any chemical smell-just clean, natural comfort.
I've noticed a huge difference in my sleep quality; it relieves pressure from my neck and shoulders, and I wake up without stiffness.
The Tencel cover is smooth, breathable, and removable for easy washing, which makes it feel extra fresh. The packaging was beautiful, making it feel like a premium gift right out of the box.
If you're looking for a high-quality natural pillow that's supportive, durable, and chemical-free, this is it. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 31, 2025
★★★★★ 3
Hard to judge thickness with only dimensions to go by
Color: Soft, Size: Standard(24"×16"×5.5")
Very nice quality, just what I hoped for. But it's just too thick for me. I'm thinking of using my electric knife to try to skim enough off to be usable. I've slept most of my life on latex pillows and have not enjoyed using other pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
★★★★★ 4
Good pillow, but too high for my neck
Color: Soft, Size: Standard(24"×16"×5.5")
I love the Talalay latex for the quality, and that there is no smell. However, it is too high for my neck. I wish the company would make it in a 3" version, instead of just 5.5". They do have a "slim" version, but it is not even the same kind of pillow. It measures 2.5" and the back side is completely flat, so you can not turn it in over for use. The company basically took this 5.5" version and cut it in half for the slim.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2025
★★★★★ 5
The Ultimate Natural Latex Pillow
Color: Soft, Size: Standard(24"×16"×5.5")
I recently switched to the Talatex 100% Natural Premium Latex Pillow and it has transformed my sleep. Unlike synthetic memory foam, this Purefusion Talalay Latex is incredibly supportive yet soft, providing excellent pressure relief for both my neck and shoulders. I appreciate knowing there are no harsh chemicals in the core.
It retains its shape perfectly night after night and stays cool thanks to the breathable material. The quality is immediately apparent, especially with the removable Tencel cover, which is luxuriously smooth. It arrived in a beautiful package, truly making it the best gift for anyone seeking a healthier, more comfortable night's sleep. Highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 28, 2025
★★★★★ 5
The Natural Way to Better Sleep.
Color: Soft, Size: Standard(24"×16"×5.5"), Color: Soft, Size: Standard(24"×16"×5.5")
After trying out several latex over the years, the Talatex Talalay 100 stands out for its luxurious comfort, quality materials, and overall sleep experience. Made from 100% natural Talalay latex, it offers a perfect balance of softness and support.
Comfort & Support:
The Talalay latex feels incredibly buoyant yet plush. I found it especially beneficial for relieving neck pain.
Temperature Regulation:
One of the best aspects is its breathability. Latex naturally sleeps cooler than other foams.
Eco-Friendliness:
Another big plus is that it’s made from natural latex with no synthetic additives, making it a healthier and more environmentally friendly choice. It’s also hypoallergenic, which is great for allergy sufferers.
Verdict:
If you're looking for a premium latex sleep surface that delivers both comfort and longevity, the Talatex Talalay 100 is a solid investment. It’s not the cheapest option out there, but the quality and sleep experience justify the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2025
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