Description
Holley EFI Terminator X Max – 2007-2012 Gen III HEMI
The Holley EFI Terminator X Max – 2007-2012 Gen III HEMI is a plug-and-play EFI system designed specifically for 2007-2012 Chrysler Gen III HEMI engines (5.7L, 6.1L, and 6.4L) with factory Drive-by-Wire throttle bodies (non-VVT). It delivers advanced tuning features, boost and nitrous control, and comprehensive sensor support to help domestic V8 enthusiasts build powerful, reliable street or race engines.
Key Features
- Plug-and-play control for 2007-2012 Gen III HEMI engines with Drive-by-Wire throttle body (non-VVT)
- Includes Bosch LSU 4.9 wideband O2 sensors and EV6 injector harness
- Built-in 1bar MAP sensor with external MAP sensor support for boosted applications
- Advanced boost control and multi-stage progressive nitrous control with closed loop AFR safeties
- Supports high impedance injectors, coil-per-cylinder ignition, knock retard, and individual cylinder fuel corrections
- 3.5” touchscreen handheld with calibration wizard, data logging, and gauge display included
- Compact ECU design for flexible mounting, CAN-BUS support, and free Holley EFI tuning software
- Self-tuning and user-tuneable with on-board diagnostic LEDs for easy troubleshooting
- Supports E85 fuel, exhaust gas temperature (EGT) sensors, and accelerometer inputs
Fitment
- Chrysler Gen III HEMI 5.7L, 6.1L, and 6.4L engines (2007-2012)
- Factory Drive-by-Wire throttle body equipped vehicles (non-VVT only)
Note: Verify compatibility with your specific engine and vehicle before ordering. Requires tuning and installation knowledge; professional installation recommended for best results.






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