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 budget-friendly, fully featured standalone EFI system designed to give you complete control over your GM LS engine. It supports real-time fuel learning, boost and nitrous control, and advanced tuning capabilities with easy laptop software access. Perfect for enthusiasts building naturally aspirated or forced induction LS-powered trucks and cars who want professional-level tuning without the hassle of a junkyard ECU.

Key Features

• Designed for Gen IV GM LS engines with 58x crank and 4x cam sensors, compatible with EV6 injectors
• Real-time fuel map learning and self-tuning for easy and accurate calibration
• Integrated 1 bar MAP sensor and support for boost, nitrous (wet/dry, progressive), and advanced ignition timing control
• Includes Bosch LSU 4.9 wideband oxygen sensor for precise AFR feedback
• 4 programmable inputs and outputs for electric fans, boost solenoids, nitrous activation, and more
• Compact ECU with diagnostic LEDs for quick troubleshooting
• Comes with a USB/CAN tuning cable and free Holley EFI software for full laptop tuning access
• Supports CAN-BUS, datalogging, knock retard, accelerometer, and coil-per-cylinder ignition
• Plug-and-play compatibility with Holley EFI accessories and modules
• Includes main harnesses, wideband sensor, input/output harness, and vacuum adapters

Fitment

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

Note: Requires use of free Terminator X software for initial setup; no handheld tuner included. Verify compatibility before ordering. Fuel injectors, ignition coils, and other engine components are not included. Proper tuning and installation knowledge recommended.