Holley EFI Terminator X Gen III HEMI EFI Kit
2005–2010 Chrysler 5.7L / 6.1L and 2011+ Chrysler 6.4L Gen III HEMI Engines (Non-VVT)
550-1223
Overview:
The Holley EFI Terminator X Gen III HEMI EFI Kit is a comprehensive engine management solution designed specifically for Chrysler Gen III HEMI engines produced between 2003 and 2013+, including the 5.7L, 6.1L, and 6.4L variants without variable valve timing (VVT). This plug-and-play system offers enthusiasts and professional tuners alike an accessible, powerful platform to optimize fuel delivery, ignition timing, and boost control for naturally aspirated or boosted applications.
Equipped with advanced features such as real-time fuel learning and high impedance injector drivers, the Terminator X ECU simplifies the tuning process while delivering precise engine control. Whether you’re building a street cruiser, weekend track car, or a serious race machine, this kit provides the technology and support needed to maximize performance without breaking the bank.
Key Features:
The Terminator X EFI kit is packed with versatile features engineered to enhance engine management and tuning flexibility:
- Plug-and-play compatibility for Chrysler Gen III HEMI engines (2003–2013+), including 5.7L, 6.1L, and 6.4L (non-VVT only)
- High impedance injector drivers supporting Holley EFI and most stock injectors (EV1 or EV6 injector harness included)
- Integrated 1 bar MAP sensor with external MAP sensor support for boosted applications
- Four programmable inputs and outputs for electric fans, boost control solenoids, nitrous activation, and more
- Included Bosch LSU 4.9 wideband O2 sensors for accurate air/fuel ratio monitoring and closed-loop tuning
- Advanced boost control options including boost vs. time, gear, RPM, speed, and built-in boost safeties
- Nitrous control channels supporting wet or dry, progressive or non-progressive setups with rich/lean safeties
- Multiple advanced tuning tables (1D and 2D) for nearly unlimited calibration flexibility
- On-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, cam signal, and more
- Compact ECU design (7.45” x 4.1” x 1.66”) for flexible mounting options
- 3.5” touchscreen handheld controller with calibration wizard, data logging, and customizable gauge displays
- Free Holley EFI tuning software for full laptop compatibility and advanced tuning capabilities
Construction & Design:
The Terminator X ECU is engineered with a compact, durable enclosure designed to withstand the rigors of automotive environments. Its robust internal electronics feature high impedance injector drivers and integrated sensors to reduce the need for external components, simplifying installation and improving reliability. The included handheld controller features a bright, responsive 3.5-inch LCD touchscreen that allows intuitive access to tuning parameters and real-time engine data.
Holley EFI’s design philosophy emphasizes ease of use without sacrificing advanced functionality, making the Terminator X an ideal choice for both novice tuners and experienced professionals.
Installation & Fitment:
This EFI kit is designed as a plug-and-play solution for Chrysler Gen III HEMI engines from 2003 to 2013+ (5.7L, 6.1L, and 6.4L non-VVT). Installation requires minimal modifications, as the ECU integrates seamlessly with factory wiring harnesses and sensors. The kit includes all necessary harnesses, vacuum adapters, and sensors to facilitate a straightforward setup.
For boosted applications, the internal MAP sensor can be disabled in favor of an external MAP sensor harness, which is included with a terminated connector for easy installation. The compact ECU size allows flexible mounting locations, but it is important to install the unit with diagnostic LEDs facing upward for proper visibility.
What's Included:
- Terminator X ECU with integrated 1 bar MAP sensor
- 3.5” touchscreen handheld controller with calibration wizard
- EV1 or EV6 injector harness (based on injector configuration)
- Bosch LSU 4.9 wideband O2 sensors
- Vacuum hose adapters (1/8”, 1/4”, and 3/16” sizes)
- External MAP sensor harness with terminated connector
- Comprehensive wiring harness and connectors
- Free Holley EFI tuning software for laptop use
- Detailed installation and tuning instructions
Ideal For:
The Holley EFI Terminator X Gen III HEMI EFI Kit is perfect for enthusiasts and builders seeking a reliable, feature-rich engine management system for Chrysler Gen III HEMI engines without VVT. It suits a wide range of applications, from budget-friendly street builds to high-performance race cars requiring advanced boost and nitrous control. Its plug-and-play design and included base maps enable quick installation and fast tuning, making it an excellent choice for both first-time EFI users and seasoned tuners.
Holley EFI delivers standalone engine management and EFI systems built for everything from engine swaps to serious horsepower builds. With platforms like Sniper, Terminator X, HP, and Dominator, Holley EFI is aimed at enthusiasts who want modern tuning control, data, and drivability—whether it’s a street car, track car, or full-on race program.
Holley EFI Terminator X Gen III HEMI EFI Kit: Chrysler 300 / Dodge Ram 1500 (03-15)
- Unit price
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550-1223 Holley EFI 03-15 Chrysler 300 / Dodge Ram 1500 Terminator X Gen III HEMI EFI Kit. This advanced EFI kit delivers plug-and-play engine control for non-VVT Gen III HEMI engines, featuring real-time fuel learning, high impedance injector drivers, and an integrated 1bar MAP sensor. The 3.5" touchscreen handheld simplifies tuning with a calibration wizard and gauge display. Supporting boost, nitrous control, and multiple programmable inputs/outputs, it’s ideal for street or race use. Compact design and free tuning software ensure easy installation and customization.
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Holley EFI Terminator X Gen III HEMI EFI Kit
2005–2010 Chrysler 5.7L / 6.1L and 2011+ Chrysler 6.4L Gen III HEMI Engines (Non-VVT)
550-1223
Overview:
The Holley EFI Terminator X Gen III HEMI EFI Kit is a comprehensive engine management solution designed specifically for Chrysler Gen III HEMI engines produced between 2003 and 2013+, including the 5.7L, 6.1L, and 6.4L variants without variable valve timing (VVT). This plug-and-play system offers enthusiasts and professional tuners alike an accessible, powerful platform to optimize fuel delivery, ignition timing, and boost control for naturally aspirated or boosted applications.
Equipped with advanced features such as real-time fuel learning and high impedance injector drivers, the Terminator X ECU simplifies the tuning process while delivering precise engine control. Whether you’re building a street cruiser, weekend track car, or a serious race machine, this kit provides the technology and support needed to maximize performance without breaking the bank.
Key Features:
The Terminator X EFI kit is packed with versatile features engineered to enhance engine management and tuning flexibility:
- Plug-and-play compatibility for Chrysler Gen III HEMI engines (2003–2013+), including 5.7L, 6.1L, and 6.4L (non-VVT only)
- High impedance injector drivers supporting Holley EFI and most stock injectors (EV1 or EV6 injector harness included)
- Integrated 1 bar MAP sensor with external MAP sensor support for boosted applications
- Four programmable inputs and outputs for electric fans, boost control solenoids, nitrous activation, and more
- Included Bosch LSU 4.9 wideband O2 sensors for accurate air/fuel ratio monitoring and closed-loop tuning
- Advanced boost control options including boost vs. time, gear, RPM, speed, and built-in boost safeties
- Nitrous control channels supporting wet or dry, progressive or non-progressive setups with rich/lean safeties
- Multiple advanced tuning tables (1D and 2D) for nearly unlimited calibration flexibility
- On-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, cam signal, and more
- Compact ECU design (7.45” x 4.1” x 1.66”) for flexible mounting options
- 3.5” touchscreen handheld controller with calibration wizard, data logging, and customizable gauge displays
- Free Holley EFI tuning software for full laptop compatibility and advanced tuning capabilities
Construction & Design:
The Terminator X ECU is engineered with a compact, durable enclosure designed to withstand the rigors of automotive environments. Its robust internal electronics feature high impedance injector drivers and integrated sensors to reduce the need for external components, simplifying installation and improving reliability. The included handheld controller features a bright, responsive 3.5-inch LCD touchscreen that allows intuitive access to tuning parameters and real-time engine data.
Holley EFI’s design philosophy emphasizes ease of use without sacrificing advanced functionality, making the Terminator X an ideal choice for both novice tuners and experienced professionals.
Installation & Fitment:
This EFI kit is designed as a plug-and-play solution for Chrysler Gen III HEMI engines from 2003 to 2013+ (5.7L, 6.1L, and 6.4L non-VVT). Installation requires minimal modifications, as the ECU integrates seamlessly with factory wiring harnesses and sensors. The kit includes all necessary harnesses, vacuum adapters, and sensors to facilitate a straightforward setup.
For boosted applications, the internal MAP sensor can be disabled in favor of an external MAP sensor harness, which is included with a terminated connector for easy installation. The compact ECU size allows flexible mounting locations, but it is important to install the unit with diagnostic LEDs facing upward for proper visibility.
What's Included:
- Terminator X ECU with integrated 1 bar MAP sensor
- 3.5” touchscreen handheld controller with calibration wizard
- EV1 or EV6 injector harness (based on injector configuration)
- Bosch LSU 4.9 wideband O2 sensors
- Vacuum hose adapters (1/8”, 1/4”, and 3/16” sizes)
- External MAP sensor harness with terminated connector
- Comprehensive wiring harness and connectors
- Free Holley EFI tuning software for laptop use
- Detailed installation and tuning instructions
Ideal For:
The Holley EFI Terminator X Gen III HEMI EFI Kit is perfect for enthusiasts and builders seeking a reliable, feature-rich engine management system for Chrysler Gen III HEMI engines without VVT. It suits a wide range of applications, from budget-friendly street builds to high-performance race cars requiring advanced boost and nitrous control. Its plug-and-play design and included base maps enable quick installation and fast tuning, making it an excellent choice for both first-time EFI users and seasoned tuners.
Holley EFI delivers standalone engine management and EFI systems built for everything from engine swaps to serious horsepower builds. With platforms like Sniper, Terminator X, HP, and Dominator, Holley EFI is aimed at enthusiasts who want modern tuning control, data, and drivability—whether it’s a street car, track car, or full-on race program.
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YEARMAKEMODELSUBMODEL2012 - 2014Chrysler3006.4L 3922006 - 2010Chrysler300C6.1L SRT82002 - 2010DodgeRam5.7L Hemi
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Standard shipping
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.