Holley EFI Terminator X Max – Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3

Holley EFI Terminator X Max – Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3

The Holley EFI Terminator X Max – Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 is a powerful, budget-friendly standalone EFI system designed for GM LS truck engines and LS2/LS3 platforms. It offers complete engine control with real-time fuel learning, drive-by-wire throttle body support, and integrated transmission control for 4L60E/4L80E automatics. This system is perfect for enthusiasts seeking reliable, race-proven technology to build faster, more powerful American V8 vehicles.

Key Features

• Compatible with GM LS 4.8/5.3/6.0 truck engines and LS2/LS3 with 58x crank and 4x cam sensors
• Real-time fuel map learning simplifies tuning and optimizes performance
• High impedance injector drivers support stock and Holley EFI injectors (EV1 style)
• Integrated 1bar MAP sensor ideal for naturally aspirated or nitrous setups
• 4 programmable inputs and 4 outputs for fans, boost control, nitrous, and more
• Advanced boost and nitrous control with multiple safety features
• Includes 3.5″ touchscreen handheld with calibration wizard and data logging
• Full laptop tuning software included for advanced user control
• Compact ECU with diagnostic LEDs for easy troubleshooting
• Plug-and-play compatibility with Holley EFI accessories and digital dashboards

Fitment

• GM LS Gen IV 4.8L, 5.3L, and 6.0L truck engines
• LS2 and LS3 engines with 58x crank and 4x cam sensors
• 4L60E and 4L80E automatic transmissions
• Drive-by-wire throttle body applications

Note: Verify compatibility with your specific engine and transmission before ordering. Fuel injectors, fuel pump, and other supporting components are not included and may be required for installation. Tuning knowledge or professional support is recommended for optimal performance.