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 specifically for GM LS truck engines and LS2/LS3 platforms. It offers advanced features like real-time fuel learning, boost and nitrous control, and drive-by-wire throttle compatibility to help enthusiasts maximize performance with precise engine management.

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 removes guesswork from tuning
• Integrated 1bar MAP sensor ideal for naturally aspirated or nitrous setups
• Supports drive-by-wire throttle bodies and USCAR (EV6) injectors
• Advanced boost control with multiple boost vs RPM, gear, time, and speed options
• Progressive wet and dry nitrous control with rich/lean safeties and closed loop AFR targeting
• On-board diagnostic LEDs and Bosch LSU 4.9 wideband oxygen sensor included
• Includes 3.5″ touchscreen handheld for calibration wizard, data-logging, and gauge customization
• Compact ECU with plug-and-play harnesses for engine, transmission, injectors, and drive-by-wire

Fitment

• GM LS 4.8L, 5.3L, 6.0L Gen IV Truck Engines
• LS2 and LS3 engines with 58x crank and 4x cam sensors
• 4L60E and 4L80E automatic transmissions

Note: Verify compatibility with your specific engine and transmission setup before ordering. Requires compatible fuel injectors and throttle body; fuel pump and fuel hose not included. Professional tuning recommended for forced induction and nitrous applications.