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, user-tuneable EFI system designed for GM LS truck engines and LS2/LS3 platforms. It offers complete engine control with real-time fuel learning, advanced boost and nitrous management, and drive-by-wire throttle compatibility, making it ideal for enthusiasts building faster, more powerful American V8 vehicles.

Key Features

• Designed for GM LS 4.8/5.3/6.0 Truck Engines and LS2/LS3 with 58x crank, 4x cam, and 4L60E/4L80E transmissions
• Real-time fuel map learning for easy tuning
• High impedance injector drivers supporting stock LS and Holley EFI injectors
• Integrated Bosch LSU 4.9 wideband O2 sensor for accurate AFR readings
• On-board 1bar MAP sensor with adapters for vacuum tuning
• 4 programmable inputs and 4 outputs for accessories like electric fans, boost control, and nitrous
• Comprehensive boost and nitrous control including progressive and multi-stage options
• Advanced customizable tables for fuel, spark, and safety features
• Diagnostic LEDs for quick engine status monitoring
• Includes 3.5″ touchscreen handheld with calibration wizard and data-logging
• Compact ECU with flexible mounting options
• Plug-and-play compatible with Holley EFI accessories and digital dash systems
• Supports drive-by-wire throttle bodies and CAN-BUS

Fitment

• GM LS 4.8L, 5.3L, and 6.0L truck engines
• GM LS2 and LS3 engines with 58x crank and 4x cam sensors
• Compatible with 4L60E and 4L80E transmissions
• Designed for EV6 injector connectors and drive-by-wire throttle bodies

Note: Verify compatibility with your specific engine and transmission before ordering. Installation requires basic EFI knowledge; tuning software and handheld interface included for custom calibration. Fuel injectors, fuel pump, and other hardware are not included.