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

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

The Holley EFI Terminator X – Gen IV 4.8/5.3/6.0 GM Truck Engines and LS2/LS3 is a fully loaded, budget-friendly standalone EFI system designed to give you complete control over your LS engine’s fuel and ignition. Compatible with Gen IV GM LS engines featuring 58x crank and 4x cam sensors, this system includes self-learning fuel strategies, boost and nitrous control, and a 3.5″ touchscreen handheld for easy tuning and data logging. It’s ideal for enthusiasts seeking reliable, performance-focused engine management without the complexity of a junkyard ECU.

Key Features

• Designed for GM LS Engines with 58x Crank, 4x Cam sensors, and USCAR (EV6) injectors
• Real-time fuel map learning for easy tuning and improved performance
• Integrated 1bar MAP sensor and support for boost control, wet/dry nitrous, and progressive nitrous control
• Includes 3.5″ touchscreen handheld with calibration wizard, data logging, and customizable gauge display
• Supports coil-per-cylinder ignition, individual cylinder fuel corrections, E85 fuel, and forced induction setups
• Compact ECU with diagnostic LEDs and multiple programmable inputs/outputs for accessories and safety features
• Plug and play compatibility with Holley EFI accessories and free tuning software

Fitment

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

Note: Verify engine compatibility before ordering. Requires supporting fuel system components; fuel injectors, fuel pump, and sensors are not included. Proper tuning is essential for optimal performance.