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. Featuring real-time fuel learning, integrated boost and nitrous control, and drive-by-wire throttle body support, this compact ECU gives you complete control over your engine’s performance with a proven, race-winning Holley EFI technology at an affordable price.

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 and precise tuning
• Supports high impedance injectors with EV6 connectors; includes Bosch LSU 4.9 wideband O2 sensor
• On-board 1bar MAP sensor ideal for naturally aspirated or nitrous setups; boost control up to multi-stage nitrous
• 4 programmable inputs and outputs for electric fans, boost solenoids, nitrous control, and more
• Includes 3.5″ touchscreen handheld with calibration wizard, data logging, and customizable gauges
• Compact ECU with diagnostic LEDs and plug-and-play compatibility with Holley EFI accessories

Fitment

• GM LS Gen IV 4.8L, 5.3L, 6.0L truck engines
• GM LS2 and LS3 engines with 58x crank and 4x cam sensors
• 4L60E and 4L80E transmission control

Note: Verify engine and transmission compatibility before ordering. Fuel injectors, fuel pump, and mounting hardware are not included. Recommended pedal part number 10379038. Proper tuning is required for optimal performance.