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

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

The Holley EFI Terminator X – Gen III 4.8/5.3/6.0 GM Truck Engines is a powerful, user-tuneable EFI system designed specifically for GM LS truck engines with 24x crank reluctor and Multec 2 injectors. It offers self-learning fuel strategies, boost and nitrous control, and comprehensive engine management features to help you maximize performance and reliability on the street or track.

Key Features

• Real-time fuel map learning for easy tuning and precise fuel delivery
• High impedance injector drivers compatible with stock and Holley EFI injectors
• Integrated Bosch LSU 4.9 wideband O2 sensor for accurate AFR monitoring
• 4 programmable inputs and outputs for accessories like fans, boost control, and nitrous
• Boost control with multiple modes and safeties, plus progressive wet/dry nitrous control
• Advanced ignition timing control with support for GM LS 24x ignition systems
• Compact ECU with onboard diagnostic LEDs for quick troubleshooting
• Includes all necessary harnesses, wideband sensor, vacuum adapters, and USB/CAN tuning cable
• Free Holley EFI software for laptop tuning and diagnostics
• Supports E85, forced induction, knock retard, datalogging, and individual cylinder fuel corrections

Fitment

• GM Gen III LS Truck Engines: 4.8L, 5.3L, and 6.0L equipped with 24x crank reluctor and Multec 2 injectors

Note: Requires use of the free Terminator X software for initial setup; no handheld tuner included. Verify compatibility with your specific engine and accessories before ordering.