{"product_id":"holley-efi-terminator-x-2007-2013-hemi-gen-iii-kit-550-1225","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\u003e2003–2013+ Chrysler 5.7L \/ 6.1L \/ 6.4L Non-VVT HEMI Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e550-1225\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 from 2003 through 2013 and beyond. Compatible with 5.7L, 6.1L, and 6.4L non-VVT engines, this kit delivers precise fuel and ignition control to optimize performance, drivability, and tuning flexibility. Whether you're upgrading a street machine, building a weekend racer, or assembling a budget-friendly project, the Terminator X offers advanced features and user-friendly operation to get you on the road or track quickly.\u003c\/p\u003e\u003cp\u003eEquipped with real-time fuel learning and high impedance injector drivers, this EFI kit simplifies tuning and ensures smooth engine operation. The included 3.5\" LCD touchscreen handheld controller provides an intuitive calibration wizard, gauge displays, and data logging, making it accessible for both novice and experienced tuners. Holley EFI’s industry-leading software and support further enhance the tuning experience, allowing full laptop connectivity for advanced adjustments.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X Gen III HEMI EFI Kit combines cutting-edge technology with practical features tailored for Chrysler HEMI engines:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePlug-and-play engine control for 2003–2013+ Chrysler Gen III HEMI 5.7L, 6.1L, and 6.4L non-VVT engines\u003c\/li\u003e\n\u003cli\u003eCompatible with Holley EFI accessories including gauges, shift lights, and digital\/pro dashes (Holley P\/N 553-106, 553-111, 553-112)\u003c\/li\u003e\n\u003cli\u003eIncludes EV1 or EV6 injector harness based on injector configuration\u003c\/li\u003e\n\u003cli\u003eHigh impedance injector drivers support Holley EFI and most stock injectors (does not support low impedance injectors)\u003c\/li\u003e\n\u003cli\u003eIntegrated Bosch LSU 4.9 wideband O2 sensors for accurate air\/fuel ratio monitoring and tuning\u003c\/li\u003e\n\u003cli\u003eBuilt-in 1 bar MAP sensor with external MAP sensor option 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\u003eAdvanced boost control features including boost vs. time, gear, RPM, speed, and safety limits\u003c\/li\u003e\n\u003cli\u003eComprehensive nitrous control with wet\/dry, progressive\/non-progressive modes, and closed-loop AFR targeting\u003c\/li\u003e\n\u003cli\u003eMultiple advanced tables for flexible tuning configurations, including 1D and 2D maps\u003c\/li\u003e\n\u003cli\u003eOn-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, and cam signals\u003c\/li\u003e\n\u003cli\u003eCompact ECU design measuring 7.45” x 4.1” x 1.66” for versatile mounting options\u003c\/li\u003e\n\u003cli\u003eFree Holley EFI tuning software with full laptop compatibility for detailed tuning and data logging\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, rugged enclosure designed to withstand the demanding automotive environment. Its small footprint allows for flexible installation locations within the engine bay or interior compartments. The kit includes high-quality wiring harnesses and vacuum adapters (1\/8”, 1\/4”, and 3\/16”) to ensure seamless integration with your engine’s existing components. Holley’s precision manufacturing and robust electronics deliver reliable performance and long-term durability, making it a trusted choice for enthusiasts and professional builders alike.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis EFI kit is designed for straightforward installation on Chrysler Gen III HEMI engines without variable valve timing (VVT) from 2003 to 2013 and later. The plug-and-play harnesses and included injector connectors simplify wiring, reducing installation time and complexity. The ECU’s compact size allows for mounting in tight spaces, but it is important to orient the diagnostic LEDs facing upward for proper operation. The included handheld touchscreen controller and calibration wizard guide users through initial setup and tuning, minimizing the need for specialized tools or external support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eTerminator X ECU for Gen III HEMI engines\u003c\/li\u003e\n\u003cli\u003e3.5” LCD touchscreen handheld controller with calibration wizard\u003c\/li\u003e\n\u003cli\u003eEV1 or EV6 injector harness (based on injector type)\u003c\/li\u003e\n\u003cli\u003eBosch LSU 4.9 wideband O2 sensors\u003c\/li\u003e\n\u003cli\u003eBuilt-in 1 bar MAP sensor and terminated connector for external MAP sensor\u003c\/li\u003e\n\u003cli\u003eVacuum hose adapters (1\/8”, 1\/4”, 3\/16”)\u003c\/li\u003e\n\u003cli\u003eWiring harnesses and connectors for sensors and inputs\/outputs\u003c\/li\u003e\n\u003cli\u003eFree Holley EFI tuning software with laptop compatibility\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 ideal for enthusiasts and builders seeking a reliable, feature-rich engine management system for Chrysler 5.7L, 6.1L, and 6.4L non-VVT HEMI engines. It suits a wide range of applications including street performance vehicles, track cars, muscle cars, and budget builds. Its advanced tuning capabilities and accessory compatibility also make it a solid choice for those planning to add boost, nitrous, or other performance enhancements.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":47315668467924,"sku":"550-1225","price":1949.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/3457_8ad960e19b49a7de03edcb417c059d9b39f83fff_f15c210a-5caa-4961-9387-fda8d981991f.webp?v=1766655090","url":"https:\/\/fasthemis.com\/products\/holley-efi-terminator-x-2007-2013-hemi-gen-iii-kit-550-1225","provider":"FastHemis","version":"1.0","type":"link"}