{"product_id":"holley-efi-terminator-x-2003-2006-hemi-gen-iii-kit-550-1223","title":"Holley EFI Terminator X Gen III HEMI EFI Kit: Chrysler 300 \/ Dodge Ram 1500 (03-15)","description":"\u003ch3\u003eHolley EFI Terminator X Gen III HEMI EFI Kit\u003c\/h3\u003e\u003cp\u003e2005–2010 Chrysler 5.7L \/ 6.1L and 2011+ Chrysler 6.4L Gen III HEMI Engines (Non-VVT)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e550-1223\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eEquipped 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X EFI kit is packed with versatile features engineered to enhance engine management and tuning flexibility:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePlug-and-play compatibility for Chrysler Gen III HEMI engines (2003–2013+), including 5.7L, 6.1L, and 6.4L (non-VVT only)\u003c\/li\u003e\n\u003cli\u003eHigh impedance injector drivers supporting Holley EFI and most stock injectors (EV1 or EV6 injector harness included)\u003c\/li\u003e\n\u003cli\u003eIntegrated 1 bar MAP sensor with external MAP sensor support for boosted applications\u003c\/li\u003e\n\u003cli\u003eFour programmable inputs and outputs for electric fans, boost control solenoids, nitrous activation, and more\u003c\/li\u003e\n\u003cli\u003eIncluded Bosch LSU 4.9 wideband O2 sensors for accurate air\/fuel ratio monitoring and closed-loop tuning\u003c\/li\u003e\n\u003cli\u003eAdvanced boost control options including boost vs. time, gear, RPM, speed, and built-in boost safeties\u003c\/li\u003e\n\u003cli\u003eNitrous control channels supporting wet or dry, progressive or non-progressive setups with rich\/lean safeties\u003c\/li\u003e\n\u003cli\u003eMultiple advanced tuning tables (1D and 2D) for nearly unlimited calibration flexibility\u003c\/li\u003e\n\u003cli\u003eOn-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, cam signal, and more\u003c\/li\u003e\n\u003cli\u003eCompact ECU design (7.45” x 4.1” x 1.66”) for flexible mounting options\u003c\/li\u003e\n\u003cli\u003e3.5” touchscreen handheld controller with calibration wizard, data logging, and customizable gauge displays\u003c\/li\u003e\n\u003cli\u003eFree Holley EFI tuning software for full laptop compatibility and advanced tuning capabilities\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eHolley 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\u003cp\u003eFor 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTerminator X ECU with integrated 1 bar MAP sensor\u003c\/li\u003e\n\u003cli\u003e3.5” touchscreen handheld controller with calibration wizard\u003c\/li\u003e\n\u003cli\u003eEV1 or EV6 injector harness (based on injector configuration)\u003c\/li\u003e\n\u003cli\u003eBosch LSU 4.9 wideband O2 sensors\u003c\/li\u003e\n\u003cli\u003eVacuum hose adapters (1\/8”, 1\/4”, and 3\/16” sizes)\u003c\/li\u003e\n\u003cli\u003eExternal MAP sensor harness with terminated connector\u003c\/li\u003e\n\u003cli\u003eComprehensive wiring harness and connectors\u003c\/li\u003e\n\u003cli\u003eFree Holley EFI tuning software for laptop use\u003c\/li\u003e\n\u003cli\u003eDetailed installation and tuning instructions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":47315668402388,"sku":"550-1223","price":1949.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/3455_8ad960e19b49a7de03edcb417c059d9b39f83fff_eaa76cfc-0ea6-4648-a03f-957087f1303f.webp?v=1766655091","url":"https:\/\/fasthemis.com\/products\/holley-efi-terminator-x-2003-2006-hemi-gen-iii-kit-550-1223","provider":"FastHemis","version":"1.0","type":"link"}