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 engine management system designed specifically for GM LS truck engines and LS2/LS3 platforms. It offers advanced self-learning fuel strategies, boost and nitrous control, and comprehensive inputs and outputs to optimize your V8’s performance. This plug-and-play ECU is ideal for enthusiasts seeking precise control and race-proven technology without breaking the bank.

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 and improved drivability
• High impedance injector drivers compatible with stock LS and Holley EFI injectors
• Integrated 1 bar MAP sensor, with support for higher boost via optional sensor
• 4 programmable inputs and 4 outputs for accessories, boost control, and nitrous management
• Boost control with multiple strategies including boost vs time, gear, RPM, and speed
• Wet and dry nitrous control with progressive and multi-stage capabilities
• On-board diagnostic LEDs for quick troubleshooting
• Includes 3.5″ touchscreen handheld with calibration wizard and data logging
• Supports CAN-BUS, knock retard, EGT, accelerometer, and coil-per-cylinder ignition
• Compatible with Holley EFI accessories such as gauges and digital dash modules
• Includes all necessary engine and transmission harnesses, wideband oxygen sensor, and vacuum adapters

Fitment

• GM Gen IV LS 4.8L, 5.3L, 6.0L truck engines
• GM 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 before ordering. Low impedance injectors are not supported. Installation requires basic wiring knowledge and tuning software use.