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 high-performance standalone EFI system designed for GM LS truck engines and LS2/LS3 platforms. It offers advanced self-tuning capabilities, integrated transmission control for 4L60E/4L80E, and supports boost and nitrous control, giving domestic V8 enthusiasts complete engine management at a budget-friendly price.

Key Features

• Designed for GM LS 4.8/5.3/6.0 truck engines and LS2/LS3 with 58x crank and 4x cam sensors
• Real-time fuel map learning for easy base fuel tuning
• High impedance injector drivers compatible with stock LS and Holley EFI injectors (EV6 connector)
• Integrated 1 bar MAP sensor with vacuum hose adapters; supports nitrous and naturally aspirated setups
• 4 programmable inputs and 4 outputs for accessories like fans, boost control, nitrous, and IAC
• Boost control with multiple strategies and safeties
• Wet and dry nitrous control with progressive and multi-stage options
• On-board diagnostic LEDs for quick engine status checks
• 3.5″ touchscreen handheld with calibration wizard, data logging, and customizable gauges
• Compact ECU housing for versatile mounting
• Compatible with Holley EFI accessories, including gauges and digital dash modules
• Includes wiring harnesses for engine, injectors, transmission, and sensors, plus Bosch LSU 4.9 wideband O2 sensor
• Supports E85 fuel, knock retard, coil-per-cylinder ignition, and individual cylinder fuel corrections
• CAN-BUS support and user-tuneable software included

Fitment

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

Note: Verify engine and transmission compatibility before ordering. Requires tuning software and handheld for setup. Injector type must be high impedance (stock LS or Holley EV6). Boost over 1 bar requires separate MAP sensor upgrade. Fuel pump, injectors, and other hardware not included.