Holley EFI Terminator X Gen III HEMI EFI Kit
2003–2013+ Chrysler 5.7L / 6.1L / 6.4L (Non-VVT) Engines
550-1224
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 from 2003 through 2013 and beyond. Compatible with 5.7L, 6.1L, and 6.4L engines without variable valve timing (Non-VVT), this kit offers a plug-and-play EFI upgrade that transforms your factory fuel injection system into a fully programmable, high-performance setup.
Ideal for enthusiasts building anything from a budget-friendly street machine to a serious track car, the Terminator X delivers advanced features like real-time fuel learning, high impedance injector drivers, and integrated sensors to ensure precise tuning and reliable engine control. The included 3.5" LCD touchscreen handheld makes setup and tuning accessible for beginners while offering full laptop compatibility for advanced users.
Key Features:
The Terminator X EFI Kit combines cutting-edge technology with user-friendly design, providing a powerful and versatile engine control platform. Key features include:
- Plug-and-play compatibility with Chrysler Gen III HEMI 5.7L, 6.1L, and 6.4L engines (2003–2013+, Non-VVT only)
- High impedance injector drivers supporting Holley EFI and most stock injectors (EV1 or EV6 injector harness included)
- Integrated Bosch LSU 4.9 wideband O2 sensors for accurate air/fuel ratio monitoring and tuning
- Built-in 1 bar MAP sensor with option to disable for external MAP sensor use, ideal for boosted applications
- Four programmable inputs and outputs for electric fans, boost control solenoids, nitrous activation, and more
- Advanced boost control options including boost vs. time, gear, RPM, speed, and safety limits
- Comprehensive nitrous control with wet/dry, progressive/non-progressive channels, and closed-loop AFR targeting
- Multiple advanced tables for fuel and spark tuning, including 1D and 2D tables with gear-based configurations
- On-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, and cam signals
- Compact ECU design (7.45" x 4.1" x 1.66") allowing flexible mounting options
- Free Holley EFI tuning software with full laptop compatibility for advanced calibration and data logging
Construction & Design:
The Terminator X ECU is engineered with a compact, durable housing designed to withstand the rigors of automotive environments. Its small footprint allows for versatile mounting locations within the engine bay or cabin. The kit includes high-quality wiring harnesses tailored for EV1 or EV6 injectors, ensuring seamless integration with your existing fuel system. The inclusion of Bosch LSU 4.9 wideband sensors guarantees reliable and precise air/fuel ratio measurements critical for optimal engine performance and safety.
Installation & Fitment:
This EFI kit is designed for straightforward installation on Chrysler Gen III HEMI engines from 2003 to 2013 and later, specifically for 5.7L, 6.1L, and 6.4L engines without variable valve timing. The plug-and-play harnesses simplify wiring, minimizing the need for custom modifications. The kit includes vacuum hose adapters in multiple sizes (1/8”, 1/4”, and 3/16”) to facilitate sensor connections. The diagnostic LEDs on the ECU provide immediate feedback during installation and troubleshooting, while the handheld touchscreen guides users through calibration and tuning.
What's Included:
- Terminator X ECU with integrated 1 bar MAP sensor
- 3.5" LCD touchscreen handheld controller with calibration wizard
- EV1 or EV6 injector harness (based on injector type)
- Bosch LSU 4.9 wideband O2 sensors
- Vacuum hose adapters (1/8”, 1/4”, and 3/16” sizes)
- Terminated connector for external MAP sensor (for boosted applications)
- Comprehensive wiring harnesses and connectors
- Free Holley EFI tuning software with laptop compatibility
Ideal For:
The Holley EFI Terminator X Gen III HEMI EFI Kit is perfect for automotive enthusiasts and professional builders seeking a reliable, feature-rich engine management system for Chrysler Gen III HEMI engines. Whether you are upgrading a factory fuel injection system, building a street performance vehicle, or constructing a dedicated race car, this kit offers the flexibility and control needed to optimize engine performance, fuel efficiency, and drivability.
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 (03-14)
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550-1224 Holley EFI 03-15 Chrysler 300 / 03-10 Dodge Ram 1500 Gen III HEMI EFI Kit. The Terminator X EFI Kit delivers plug-and-play engine control with real-time fuel learning and high impedance injector drivers. It features a built-in 1bar MAP sensor, 4 programmable I/O, and Bosch wideband O2 sensors for advanced boost and nitrous management. The compact ECU pairs with a 3.5” touchscreen handheld and calibration wizard for easy tuning. Ideal for street or race builds, it includes base maps and free software for quick setup and precise engine performance.
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Holley EFI Terminator X Gen III HEMI EFI Kit
2003–2013+ Chrysler 5.7L / 6.1L / 6.4L (Non-VVT) Engines
550-1224
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 from 2003 through 2013 and beyond. Compatible with 5.7L, 6.1L, and 6.4L engines without variable valve timing (Non-VVT), this kit offers a plug-and-play EFI upgrade that transforms your factory fuel injection system into a fully programmable, high-performance setup.
Ideal for enthusiasts building anything from a budget-friendly street machine to a serious track car, the Terminator X delivers advanced features like real-time fuel learning, high impedance injector drivers, and integrated sensors to ensure precise tuning and reliable engine control. The included 3.5" LCD touchscreen handheld makes setup and tuning accessible for beginners while offering full laptop compatibility for advanced users.
Key Features:
The Terminator X EFI Kit combines cutting-edge technology with user-friendly design, providing a powerful and versatile engine control platform. Key features include:
- Plug-and-play compatibility with Chrysler Gen III HEMI 5.7L, 6.1L, and 6.4L engines (2003–2013+, Non-VVT only)
- High impedance injector drivers supporting Holley EFI and most stock injectors (EV1 or EV6 injector harness included)
- Integrated Bosch LSU 4.9 wideband O2 sensors for accurate air/fuel ratio monitoring and tuning
- Built-in 1 bar MAP sensor with option to disable for external MAP sensor use, ideal for boosted applications
- Four programmable inputs and outputs for electric fans, boost control solenoids, nitrous activation, and more
- Advanced boost control options including boost vs. time, gear, RPM, speed, and safety limits
- Comprehensive nitrous control with wet/dry, progressive/non-progressive channels, and closed-loop AFR targeting
- Multiple advanced tables for fuel and spark tuning, including 1D and 2D tables with gear-based configurations
- On-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, and cam signals
- Compact ECU design (7.45" x 4.1" x 1.66") allowing flexible mounting options
- Free Holley EFI tuning software with full laptop compatibility for advanced calibration and data logging
Construction & Design:
The Terminator X ECU is engineered with a compact, durable housing designed to withstand the rigors of automotive environments. Its small footprint allows for versatile mounting locations within the engine bay or cabin. The kit includes high-quality wiring harnesses tailored for EV1 or EV6 injectors, ensuring seamless integration with your existing fuel system. The inclusion of Bosch LSU 4.9 wideband sensors guarantees reliable and precise air/fuel ratio measurements critical for optimal engine performance and safety.
Installation & Fitment:
This EFI kit is designed for straightforward installation on Chrysler Gen III HEMI engines from 2003 to 2013 and later, specifically for 5.7L, 6.1L, and 6.4L engines without variable valve timing. The plug-and-play harnesses simplify wiring, minimizing the need for custom modifications. The kit includes vacuum hose adapters in multiple sizes (1/8”, 1/4”, and 3/16”) to facilitate sensor connections. The diagnostic LEDs on the ECU provide immediate feedback during installation and troubleshooting, while the handheld touchscreen guides users through calibration and tuning.
What's Included:
- Terminator X ECU with integrated 1 bar MAP sensor
- 3.5" LCD touchscreen handheld controller with calibration wizard
- EV1 or EV6 injector harness (based on injector type)
- Bosch LSU 4.9 wideband O2 sensors
- Vacuum hose adapters (1/8”, 1/4”, and 3/16” sizes)
- Terminated connector for external MAP sensor (for boosted applications)
- Comprehensive wiring harnesses and connectors
- Free Holley EFI tuning software with laptop compatibility
Ideal For:
The Holley EFI Terminator X Gen III HEMI EFI Kit is perfect for automotive enthusiasts and professional builders seeking a reliable, feature-rich engine management system for Chrysler Gen III HEMI engines. Whether you are upgrading a factory fuel injection system, building a street performance vehicle, or constructing a dedicated race car, this kit offers the flexibility and control needed to optimize engine performance, fuel efficiency, and drivability.
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.