Description
Holley EFI Terminator X – GM LS1/LS6
The Holley EFI Terminator X – GM LS1/LS6 is a plug-and-play EFI system designed specifically for GM LS1 and LS6 engines with a 24x crank reluctor and EV1 injectors. It offers advanced self-tuning capabilities, real-time fuel learning, and comprehensive engine control to help you maximize power and reliability in your LS-powered vehicle.
Key Features
- Real-time fuel map learning for easy tuning
- High impedance injector drivers supporting stock LS and Holley EFI injectors
- Integrated 1bar MAP sensor ideal for naturally aspirated and nitrous setups
- 4 programmable inputs and outputs for fans, boost control, and nitrous
- Boost control with multiple safety and control strategies
- Wet and dry nitrous control with progressive and multi-stage options
- Onboard diagnostic LEDs for quick status checks
- Includes 3.5″ touchscreen handheld with calibration wizard and data logging
- Compact ECU design with plug-and-play harnesses and vacuum adapters
- Supports E85, knock retard, coil-per-cylinder ignition, and individual cylinder fuel corrections
Fitment
- GM LS1 and LS6 engines with 24x crank reluctor and EV1 style injectors
Note: Verify compatibility with your specific LS engine model before ordering. This system does not support low impedance injectors or drive-by-wire throttle bodies. Additional tuning and supporting components may be required for forced induction or high-boost applications.





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