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 powerful standalone ECU designed specifically for Gen III GM truck engines. It delivers advanced tuning features including self-learning fuel strategies, drive-by-wire throttle control, and boost and nitrous management, all at a budget-friendly price. Ideal for domestic V8 enthusiasts seeking reliable, race-proven technology with easy laptop tuning and plug-and-play compatibility.

Key Features

• Designed for 4.8/5.3/6.0L Gen III GM truck engines with 24x crank and cam sensors
• Real-time fuel map learning for simplified tuning
• Integrated 1bar MAP sensor for naturally aspirated or nitrous setups
• Drive-by-wire throttle body control included
• Supports high impedance injectors and Bosch LSU 4.9 wideband oxygen sensor
• 4 programmable inputs and outputs for fans, boost control, nitrous, and more
• Boost control with multiple safety features and nitrous control with progressive options
• CAN/USB tuning cable included for real-time laptop tuning
• Compact ECU size with onboard diagnostic LEDs for quick troubleshooting
• Plug-and-play compatibility with Holley EFI accessories and gauges

Fitment

• Gen III GM Truck Engines: 4.8L, 5.3L, 6.0L

Note: Requires use of the free Terminator X Software for initial setup; verify compatibility before ordering. Fuel injectors, fuel pump, and other hardware are not included and must be sourced separately.