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 specifically for GM LS truck engines and LS2/LS3 applications. It delivers advanced self-learning fuel strategies, integrated transmission control, and versatile inputs and outputs for performance upgrades like boost and nitrous control, providing precise tuning and reliable engine management at an affordable price.

Key Features

• Compatible with 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 and accurate base tuning
• High impedance injector drivers supporting stock and Holley EFI injectors (Bosch EV1 style)
• Integrated 1bar MAP sensor ideal for naturally aspirated or nitrous setups
• 4 programmable inputs and 4 outputs for electric fans, boost solenoids, nitrous control, and more
• Advanced boost control with multiple strategies and safeties
• Single channel progressive wet/dry nitrous control with closed-loop AFR targeting
• Onboard diagnostic LEDs for quick engine status checks
• Includes 3.5″ touchscreen handheld with calibration wizard and data logging
• Full laptop tuning software included for advanced users
• Compact ECU design with plug-and-play harnesses for engine and 4L60E/4L80E transmission control
• Supports coil-per-cylinder ignition, knock retard, EGT, and CAN-BUS integration
• Compatible with Holley EFI accessories like gauges and digital dash modules

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. This system requires high impedance injectors and does not support low impedance injectors. Installation requires basic wiring knowledge and tuning adjustments to optimize performance.