SKU: 84485652018

Terminator X Max Universal MPFI Kit w/ Trans & DBW Control - 550-959

Sale price$989.97 Regular price$1099.97
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

Terminator X Max Universal MPFI Kit w/ Trans & DBW Control - 550-959Overview: Take control of your engine with Terminator X! Don't settle for a factory 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 features real time fuel learn, high impedance injector drivers, an integrated 1bar MAP sensor, and 4 programmable inputs and outputs. The inputs and outputs

Overview:

Take control of your engine with Terminator X! Don't settle for a factory 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 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. Terminator X comes fully loaded with base maps for common V8 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 has the features and technology you need at a price that won't break the bank!

Features:

  • Plug and play Domestic V8 engine control, such as conventional push rod Chevrolet and Chrysler engines.
  • Includes EV1 Injector Harness
  • GM DBW Throttle Body Control Harness (Terminator X Max Only)
  • GM 4L60/4L80E Transmission Control Harness (Terminator X Max Only)
  • High Impedance Injector Drivers will safely power most Stock injectors, and Holley EFI Injectors. Injector support chart provided in the instructions (Will not control Low Impedance Injectors)
  • Bosch LSU 4.9 wideband to relay AFR information to the ECU for accurate reading and precise tuning control.
  • Built in 1bar MAP Sensor, vacuum hose adapters included (1/8th – ¼ and 3/16ths) - or for Boosted applications, you can disable the internal MAP sensor, and utilize an external MAP Sensor, the harness comes with the connector terminated, making the install
  • MAP Sensor vacuum hose adapters (1/8th – ¼ and 3/16ths)
  • Plug and plug ignition capability with Dual Sync and HyperSpark Distributors, adapter 558-323 required for HyperSpark Distributors.
  • 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

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Emission Code 3
Ignition Type Universal
Injector Connector Jetronic / Minitimer (Bosch)
Product Type Terminator X Universal MPFI Kit
Transmission 4L60E
Transmission 4L80E
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: 84485652018

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Cynthia
Port Orchard, US
★★★★★ 5
12 out of 10….Extremely Recommend!!!
Color: for X3 2018-2021,X4 2019-2021【10.3 inch Screen】
I absolutely love this!!! I had to return a previously purchased car phone holder but this is perfect! If I could buy one for my family and friends, I would!! The quality is top notch, it moves smoothly and was a super easy install!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 19, 2025
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Verified Purchase
Chauron
Alexandria, US
★★★★★ 5
Up & Out The Way
Color: for X3 2018-2021,X4 2019-2021【10.3 inch Screen】, Color: for X3 2018-2021,X4 2019-2021【10.3 inch Screen】
Fits Perfect! I didn’t realize it had the little cubby in the back - I’ll find something to use it for -iPhone 15Pro Max -2019 BMW x3
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Reviewed in the United States on August 19, 2025
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P. Li
Boise, US
★★★★★ 5
Works
Color: for X3 2022-2024,X4 2022-2025【12.3 inch Screen】, Color: for X3 2022-2024,X4 2022-2025【12.3 inch Screen】
It fits with my BMW X3 2022. It also has a back pocket that offers storage behind the screen. I wish it had a magnetic holder but that has nothing to do with this product.
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Reviewed in the United States on March 29, 2025
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Cary M.
New York, US
★★★★★ 3
Fits great minus no horizontal view
Color: for X3 2018-2021,X4 2019-2021【10.3 inch Screen】
Can’t move the phone to horizontal, only vertical. I sent it back because of this.
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Reviewed in the United States on December 4, 2025
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Verified Purchase
Joseph Page
Chelsea, US
★★★★★ 4
Works as expected
Color: for X3 2018-2021,X4 2019-2021【10.3 inch Screen】
Works as expected.
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Reviewed in the United States on January 4, 2026

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