Holley EFI Terminator X Max – 58x Late Truck with 6L80 Control

Holley EFI Terminator X Max – 58x Late Truck with 6L80 Control

The Holley EFI Terminator X Max – 58x Late Truck with 6L80 Control is a complete EFI and transmission control system designed for Gen IV GM LS truck engines with 58x crank reluctor and 6L80/6L90E transmissions. It offers advanced tuning features and integrated transmission management to get your LS-powered vehicle running strong with precise control and easy setup.

Key Features

• Integrated 6L80/6L90E transmission control via CAN communication with internal TCM
• 3.5-inch touchscreen handheld with calibration wizard, data logging, and gauge display
• Real-time fuel learning and high impedance injector drivers for safe injector control
• Supports boost control, nitrous control with wet/dry and progressive options
• 4 programmable inputs and outputs for fans, boost solenoids, nitrous, and more
• On-board 1 BAR MAP sensor, Bosch LSU 4.9 wideband for precise AFR tuning
• Shift tuning features including Tap Up/Down shifting and Torque Management
• Compact ECU size with diagnostic LEDs and compatibility with Holley EFI accessories

Fitment

• Gen IV GM LS 4.8/5.3/6.0 truck engines with 58x crank reluctor
• 6L80 and 6L90E transmissions (2007+ GM models)

Note: Requires Holley EFI Terminator X handheld and included TCM handheld for setup and tuning. Verify compatibility before installation. Power for transmission solenoids must be supplied by a dedicated 5-amp battery source. Injector support limited to high impedance types. No fuel injectors, fuel pump, or mounting hardware included.