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 EFI system designed specifically for GM LS truck engines with 24x crank reluctor and Multec 2 injectors. It offers advanced self-tuning technology and full user control over fuel, spark, and transmission functions, delivering reliable performance upgrades without the complexity of factory ECUs.

Key Features

• Self-learning real-time fuel map for easier tuning
• Integrated Bosch LSU 4.9 wideband O2 sensor for precise AFR control
• Supports boost control with multiple strategies and safeties
• Progressive and multi-stage wet/dry nitrous control with closed-loop AFR management
• 4 programmable inputs and outputs for accessories and triggers
• High impedance injector drivers compatible with stock and Holley EFI injectors
• Includes 3.5″ full-color touchscreen handheld with calibration wizard and data logging
• Compact ECU with diagnostic LEDs for quick troubleshooting
• Plug-and-play harnesses for 24x LS engine, Multec 2 injectors, and 4L60E/4L80E transmission control
• Free Holley EFI tuning software for full customization

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 transmission compatibility before ordering. Requires proper installation of included harnesses and tuning via handheld or PC software for optimal performance.