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 complete standalone EFI system designed to deliver precise control and easy tuning for GM LS engines. It fits Gen IV 4.8/5.3/6.0 truck engines and LS2/LS3 platforms with 58x crank, 4x cam, and drive-by-wire throttle bodies. Built for enthusiasts seeking reliable performance upgrades, this system features self-learning fuel strategies, boost and nitrous control, and extensive input/output options for advanced tuning and accessory management.

Key Features

• Real-time fuel map learning for simplified tuning
• High impedance injector drivers compatible with stock LS and Holley EFI injectors
• Integrated Bosch LSU 4.9 wideband O2 sensor for accurate AFR feedback
• On-board 1bar MAP sensor ideal for naturally aspirated or nitrous setups
• 4 programmable inputs and 4 outputs for electric fans, boost control, nitrous, and more
• Boost control with multiple strategies including boost vs time, gear, RPM, and speed
• Single channel wet/dry nitrous control with progressive and safety features
• Compact ECU with diagnostic LEDs and handheld touchscreen controller included
• Plug-and-play compatibility with Holley EFI accessories and free tuning software

Fitment

• GM Gen IV 4.8L, 5.3L, and 6.0L LS truck engines
• LS2 and LS3 engines with 58x crank and 4x cam sensors
• Drive-by-wire throttle body equipped vehicles

Note: Verify compatibility with your specific engine and wiring harness before ordering. Installation requires basic tuning knowledge and supporting components such as a recommended pedal (Holley P/N 10379038). Fuel injectors, fuel pump, and other hardware are not included.