Terminator X Max 24x/1x EV6 LS MPFI w/ Trans Control w/o 3.5 Handheld 550-919T2
SKU: 86908499034

Terminator X Max 24x/1x EV6 LS MPFI w/ Trans Control w/o 3.5 Handheld 550-919T2

Sale price$877.48 Regular price$974.98
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Ships within 48 hours · Estimated delivery Jul 5 - Jul 10

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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:
  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: 86908499034

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I purchased an air fryer and got a 3 year warranty on it from Asirion. The air fryer stopped working and I was expecting the warranty process to be complicated and didn’t have high hopes for getting a replacement. I was surprised though, not only was the website easy to navigate and user friendly, they responded immediately. I got a printable return postage receipt, dropped off the air fryer at a UPS store, and within a couple of days got a full refund in my Amazon account. Great fast service.
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Reviewed in the United States on February 26, 2026
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Sith Lord Jon - the Dark side HAD cookies before I ate them...
Louisville, US
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Be careful purchasing this.
We bought this for an ice-cream maker - they never sent the initial startup you bought this email. So I had to fight with them that yeah we bought it. Then they classified it as an ice-maker - important for pictures later . Then we had bought the machine and insurance partially with gift cards not a big deal, right? - well, the machine cost $300ish but showed on the receipt total as $180ish - guess which amount they wanted to pay out for? Then they wanted pictures showing serial number and such on the machine. I sent them pictures of each side clearly showing no stickers. Take more pictures of the front and top because what you took wasn't good - MAYBE because you thought it was an ice-maker... Take a picture showing what doesn't work - it will spin and move, but the compressor broke so it won't get cold - NOT GETTING COLD is something I can't show... it was fun being told to take a video showing it not getting cold only to tell them yeah no I am not wasting my time doing that. There was a lot of repetitive stuff but they did eventually pay out the correct amount. Would I buy it again? Yes. Is it as easy as they make it out to be? No. Did I WANT to give this review? No, because I didn't want to leave a negative review. I am a very charming, nice, and personable guy that didn't want to be mean. Keep pestering me enough about leave a review about how great we are and you will get the review you probably did not want.
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Natrona Heights, US
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You can trust ASURION warranties!
ASURION was fantastic as always. Purchased a Nespresso machine for my DIL which she absolutely loved and two months before warranty expired it started leaking which broke her heart. ASURION stood behind their warranty and refunded purchase price which I transferred to my DIL so she could purchase another machine. That’s why I never hesitate to buy their warranty’s and why I love shopping Amazon! Both companies represent their clients well. Thanks to both!
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