Holley EFI Terminator X Max – Gen III 4.8/5.3/6.0 GM Truck Engines

Holley EFI Terminator X Max – Gen III 4.8/5.3/6.0 GM Truck Engines

The Holley EFI Terminator X Max – Gen III 4.8/5.3/6.0 GM Truck Engines is a complete engine management system designed specifically for GM LS truck engines with 24x crank reluctor and Multec 2 injectors. It offers advanced self-tuning capabilities, real-time fuel learning, and integrated transmission control to deliver precise fuel and ignition management for improved performance and drivability.

Key Features

• Self-tuning with real-time fuel map learning for easy and accurate tuning
• High impedance injector drivers compatible with stock LS and Holley EFI injectors
• Integrated 1bar MAP sensor with adapters; supports boost control and nitrous management
• 4 programmable inputs and outputs for electric fans, nitrous control, boost solenoids, and more
• Includes 3.5″ full-color touchscreen handheld with calibration wizard and data logging
• Supports 4L60E/4L80E transmission control and CAN-BUS integration
• Wideband Bosch LSU 4.9 oxygen sensor included for precise AFR measurement
• Advanced tables for custom tuning, including boost vs RPM/gear/speed and nitrous safeties

Fitment

• GM Gen III LS Truck Engines: 4.8L, 5.3L, and 6.0L with 24x crank reluctor
• Compatible with 4L60E and 4L80E transmissions

Note: Verify engine and injector type compatibility before ordering. Requires user tuning or handheld wizard for base tune setup. Not compatible with low impedance injectors. Installation requires proper mounting orientation for ECU diagnostic LEDs.