Description
Holley EFI Terminator X Max – LS1/LS6
The Holley EFI Terminator X Max – LS1/LS6 is a powerful, budget-friendly standalone EFI system designed for GM LS1 and LS6 engines with 24x crank reluctor and drive-by-wire throttle bodies. It offers real-time fuel learning, advanced tuning capabilities, and support for boost and nitrous control, making it an ideal upgrade for enthusiasts looking to gain full control and maximize performance on their LS-powered vehicles.
Key Features
- Real-time fuel map learning for simplified tuning
- High impedance injector drivers compatible with stock and Holley EFI injectors
- Integrated 1bar MAP sensor perfect for naturally aspirated or nitrous setups
- 4 programmable inputs and 4 outputs for accessories like fans, boost control, and nitrous
- Supports boost control with multiple strategies and safeties
- Wet and dry nitrous control with progressive and multi-stage options
- Includes 3.5″ touchscreen handheld with calibration wizard and data logging
- Compact ECU with diagnostic LEDs and plug-and-play compatibility with Holley EFI accessories
- Supports E85 fuel, knock retard, coil-per-cylinder ignition, and individual cylinder fuel corrections
Fitment
- GM LS1 and LS6 engines with 24x crank reluctor
- Drive-by-wire throttle body equipped vehicles
Note: Verify compatibility with your specific LS engine and supporting components before ordering. Installation requires basic wiring skills and tuning knowledge. Recommended to use the Holley EFI software suite and included handheld for best results.






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