SKU: 60125247095

Holley Terminator X MAX Engine Management Systems 550-919

Sale price$899.98 Regular price$999.98
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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

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Description

Holley Terminator X MAX Engine Management Systems 550-919TERMINATOR X MAX MPFI W TRANS, LS1 W EV6 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, LS1 W/EV6

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!

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
  • 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
  • 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.

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
Part Number 550-919
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 60125247095

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Customer Review
Phoenix, US
★★★★★ 1
Mediocre and lacks required fabric content label
Color: 01 Off White, Size: Twin (60" x 80"), Color: 01 Off White, Size: Twin (60" x 80")
I am a "blanket person," meaning I love to be cozy, curled up on the couch, watching movies with my family, and using many different layers and types of blankets on my bed for different seasons. I was excited to order this 3D bubble fleece blanket by Lotus Karen because I have another 3D bubble fleece throw blanket that I absolutely love. The other one has a sherpa lining, which makes it a bit too warm for warmer seasons. This one by Lotus Karen is unlined, which I expected as the listing doesn't say it is lined. However, I'm feeling let down over the softness of the fleece compared to my other one. They all look similar in list photos, but they do not feel the same. After I unfurled this one onto my bed to let it fluff up, which it did after 90-minutes, but instead of the pile feeling plush and silky (like faux rabbit) this one feels more rough. It's not as high quality fleece, even though it looks the same in photos. Undeterred, I still really wanted to like this blanket and went to put it into the laundry, hoping it would bring out the best in it. However, I noticed that there is no fabric content label at all. Not just missing care instructions, but no label of any kind. Under the Federal Trade Commission (FTC) Textile Products Identification Act, it is a violation of United States federal law to sell a textile product that fails to plainly disclose its constituent fiber percentages, country of origin, and registered manufacturer identity physically attached to the product. Having the information on the online listing does not meet this requirement. Because the material is somewhat mediocre, I would have given it three stars. But because it fails to meet basic consumer protection laws, it loses all.
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Reviewed in the United States on June 1, 2026
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LP
Battle Creek, US
★★★★★ 5
VERY SOFT; MY DOG’S ALREADY APPROPRIATED IT
Color: 01 Off White, Size: Twin (60" x 80")
You know a blanket’s soft when my dog immediately tries to appropriate it. This is incredibly soft, and actually pretty light; it makes for a good spring or summer blanket, or a throw in addition to something else in colder weather. (The twin is big enough that you can double it up over yourself to make it thicker in colder months.) I’m not sure while it’s called a “bubble” blanket - there is a very gentle egg crate shape to it, but it’s not rigid at all, and not dual-layer or filled with air or anything. It’s a very comfy throw (my dog can also attest to that) and for ~$20 (at the time of this review), it’s a great deal. I haven’t noticed any shedding, either, but I’m going to wash it on as gentle a cycle I can, to be safe.
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Reviewed in the United States on May 31, 2026
I
Verified Purchase
Isabel Cristina Prince
Charlottesville, US
★★★★★ 5
This Blanket Feels Like a Warm Hug 🖤”
Size: Throw50" x 60", Color: Black, Size: Throw50" x 60", Color: Black
This faux fur throw blanket is incredibly soft and cozy, making it perfect for relaxing on the couch or adding extra warmth to a bed. The fluffy texture feels plush and comfortable, while the dark color gives it a modern and elegant look. I like how it instantly makes the space feel more inviting and stylish. It’s lightweight enough for everyday use but still feels warm and comfortable during cooler evenings. The material also looks beautiful draped over furniture as part of the décor. Overall, it’s a great decorative and functional blanket for anyone looking to add comfort and a cozy touch to their living space.”
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Reviewed in the United States on May 27, 2026
W
Verified Purchase
Wendy Ferrie
Cuba, US
★★★★★ 5
Absolutely Luxurious, Mushu-Approved, and Easy to Care For!
Size: Throw50" x 60", Color: Pink, Size: Throw50" x 60", Color: Pink
​I am absolutely thrilled with this faux fur blanket! From the moment I pulled it out of the packaging, the quality was immediately apparent. The fur is incredibly plush, thick, and unbelievably soft, it truly feels like wrapping up in a cloud. It's the perfect weight, too: cozy on a chilly evening, but not stifling. ​What really sets this blanket apart is the quality and durability. I can confirm that this blanket does not pill, which is a huge bonus. Even better, it holds up perfectly in the wash. I've washed it several times now, and there has been zero shedding, either in the washer/dryer or after it comes out. It remains just as soft, fluffy, and luxurious as the day I bought it, making maintenance incredibly easy. ​But the real testament to this blanket's quality comes from my dog, Mushu! I bought it for myself, but it has quickly become his favorite spot in the house. If he's not actively on a walk or eating, you can guarantee he's curled up on "the fuzzy blanket," completely buried in the softness. ​If you're looking for a blanket that is the definition of comfort, luxury, and warmth, and is also durable and holds up perfectly to washing, look no further. This is a must buy!
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Reviewed in the United States on October 11, 2025
F
Verified Purchase
Felicia
Louisville, US
★★★★★ 5
Soft and cozy!
Size: Throw50" x 60", Color: Teal
My daughter loves it. The quality is good. The color is vibrant!
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Reviewed in the United States on April 25, 2026

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