FREE 1 to 3-Day Delivery on Orders $149+ Details

Talk to a Yukon Sales Tech
1-888-706-1096
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Father’s Day Sale – Up to 40% Off! Shop Now>

Holley EFI Terminator X MAX LS Late Truck Kit with MPFI 6L80 Transmission and DBW Control (Universal; Some Adaptation May Be Required)

Item GY26771
Product Image
$0.00
Want $10? Write one of the first 5 reviews 5.0 Holley EFI Engine product ratings
Our Price

$2,449.95 kit

In Stock

Ship to: 43215
Please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.
Add to Cart
Save for later
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

    Loading Indicator

      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • Holley EFI Terminator X MAX LS Late Truck Kit With MPFI 6L80 Transmission and Drive-By-Wire Control
      • Includes Pre-Loaded Engine Tunes for Common LS Combos
      • With 3.5-Inch Touchscreen Handheld With Calibration Wizard and Custom Gauge Display
      • Real-Time Fuel Learning and On-Board 1 BAR MAP Sensor
      • Supports High Impedance EV6 Injectors; Not Compatible With Low Impedance
      • CAN-Based 6L80E/6L90E Transmission Control via Internal TCM
      • OBDII Tuning Handheld for Shift Points, Tire Size, and Gear Ratio
      • Four Programmable Inputs and Outputs for Nitrous, Boost, Fans, and More
      • Advanced Control Features: Boost Control, Nitrous Control, Tap Shifting, Torque Management
      • Compact ECU With On-Board Diagnostic LEDs and Mount-Anywhere Design
      • Plug-and-Play With Holley EFI Accessories and Digital Dash Displays
      • Free Holley EFI V3 Software With Advanced Table Configurations
      • Fits Universal Applications (Some Adaptation May Be Required)

      Description

      Full LS Engine and 6L80 Transmission Management in One Kit. The Holley EFI Terminator X MAX LS Late Truck Kit With MPFI and DBW Control delivers all-in-one control over your LS engine and 6L80E/6L90E transmission. Ideal for builders and tuners, this system provides an out-of-the-box calibration wizard, real-time fuel map learning, and support for high-impedance injectors, allowing you to tune for performance with precision and ease.

      Advanced Features and Seamless Integration. With a 3.5-inch touchscreen handheld, four programmable inputs and outputs, and Holley’s V3 software suite, this ECU allows extensive control over boost, nitrous, shift settings, and custom tuning maps. The internal CAN-based transmission module provides seamless control over shift logic, torque management, and tap shifting—ideal for modern powertrain swaps.

      Installation. The kit is plug-and-play for compatible LS platforms and GM 6L80/90E transmissions. Setup is simple with a calibration wizard and pre-configured tunes, while the compact ECU size makes it easy to mount. The included handheld allows quick setup without a laptop, but advanced tuning can be accessed via Holley EFI software.

      Application. This Holley EFI Terminator X MAX LS Late Truck Kit fits universal applications running GM LS engines (58x/4x) with 6L80E or 6L90E automatic transmissions. Some adaptation may be required for specific builds.

      Holley EFI 550-928-6

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      Installation & What's in the Box

      Installation Info

      Installation Time

      (approx) 4 Hours

      Difficulty Level:

      Mechanical expertise or professional installation required.

      Installation Guides

        No guide available for this part yet.

      What's in the Box

      • (1) EFI Control Module
      • (1) Wiring Harness
      • (4) Fuel Injectors
      • (1) Throttle Body Adapter
      • (1) Instruction Sheet
      5.0

      Reviews of Holley EFI Engine Products (3)

      Brand Image

      Reviews of Holley EFI Engine products have an average rating of 5.0 out of 5

      Questions & Answers

      No questions about this product yet. Ask the First Question