Description
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 complete standalone EFI system designed to give you precise control over your LS engine’s fuel and ignition. Built for GM Gen IV LS engines with 58x crank and 4x cam sensors, it features self-learning fuel strategies and advanced tuning capabilities to help you get the most power and drivability out of your build.
Key Features
- Real-time fuel map learning for easy tuning and improved performance
- High impedance injector drivers compatible with stock LS and Holley EFI injectors
- Integrated 1 bar MAP sensor and Bosch LSU 4.9 wideband oxygen sensor included
- 4 programmable inputs and outputs for electric fans, boost control, nitrous, and more
- Supports boost control, wet/dry nitrous with progressive and multi-stage options
- On-board diagnostic LEDs for quick troubleshooting and system status
- Compact ECU size with included handheld touchscreen for quick base tuning and data logging
- Plug-and-play compatibility with Holley EFI accessories and free tuning software
Fitment
- GM Gen IV LS engines including 4.8L, 5.3L, 6.0L truck engines and LS2/LS3 platforms
- Designed for engines with 58x crank and 4x cam sensors using USCAR (EV6) injectors
Note: Verify compatibility with your specific engine and wiring harness before ordering. Installation requires basic EFI knowledge and supporting components such as fuel pump and injectors are not included.





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