{"product_id":"holley-efi-terminator-x-max-2003-2006-gen-iii-hemi-550-1420","title":"Holley EFI Terminator X Max EFI System: Fits Chrysler \/ Dodge (03-06)","description":"\u003ch3\u003eHolley EFI Terminator X Max EFI System\u003c\/h3\u003e\u003cp\u003e2003–2006 Chrysler Gen III HEMI 5.7L \/ 6.1L \/ 6.4L (Non-VVT)\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e550-1420\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Holley EFI Terminator X Max EFI System is a comprehensive engine management solution designed specifically for Chrysler Gen III HEMI engines from 2003 to 2006, including the 5.7L, 6.1L, and 6.4L variants equipped with the factory Drive-by-Wire (DBW) throttle body. Tailored for non-VVT applications, this system delivers precise fuel and ignition control, enabling enthusiasts and professional tuners to optimize engine performance with ease.\u003c\/p\u003e\u003cp\u003eWhether you're upgrading a street-driven muscle car or building a high-performance track machine, the Terminator X Max offers a plug-and-play installation with advanced features such as real-time fuel learning, integrated sensors, and multiple programmable inputs and outputs. Its intuitive 3.5\" touchscreen handheld controller and free Holley EFI software make tuning accessible for both beginners and experienced users.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X Max EFI System combines cutting-edge technology with user-friendly design to provide a versatile and powerful tuning platform. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePlug-and-play compatibility with 2003–2006 Chrysler Gen III HEMI 5.7L, 6.1L, and 6.4L engines using factory Drive-by-Wire throttle bodies (non-VVT only)\u003c\/li\u003e\n\u003cli\u003eHigh impedance injector drivers supporting Holley EFI and most stock injectors (EV1 injector harness included)\u003c\/li\u003e\n\u003cli\u003eIntegrated Bosch LSU 4.9 wideband O2 sensors for accurate air\/fuel ratio monitoring and precise tuning\u003c\/li\u003e\n\u003cli\u003eBuilt-in 1 bar MAP sensor with the option to disable for external MAP sensor use in 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 options including boost vs. time, gear, RPM, speed, and built-in safeties\u003c\/li\u003e\n\u003cli\u003eComprehensive nitrous control with support for wet\/dry, progressive\/non-progressive setups, and closed-loop AFR targeting\u003c\/li\u003e\n\u003cli\u003eMultiple advanced tuning tables (1D and 2D) for flexible fuel and ignition mapping\u003c\/li\u003e\n\u003cli\u003eOn-board diagnostic LEDs for quick status checks of ECU power, engine run, TPS calibration, cam signal, and other critical parameters\u003c\/li\u003e\n\u003cli\u003eCompact ECU design (7.45” x 4.1” x 1.66”) for versatile 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 software suite for full laptop tuning access and advanced calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eConstruction \u0026amp; Design:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X Max EFI system is engineered with durability and precision in mind. The compact ECU housing is designed to withstand the harsh automotive environment while providing ample connectivity for sensors and accessories. The included Bosch LSU 4.9 wideband O2 sensors are industry-standard components known for their reliability and accuracy, ensuring consistent air\/fuel ratio readings under all operating conditions.\u003c\/p\u003e\u003cp\u003eHolley’s attention to detail extends to the wiring harnesses and connectors, which are designed for straightforward installation and long-term durability. The system’s software and handheld interface are developed to simplify the tuning process without sacrificing advanced functionality, making it suitable for a wide range of performance applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X Max EFI System is a direct-fit solution for 2003–2006 Chrysler Gen III HEMI engines equipped with factory Drive-by-Wire throttle bodies, excluding VVT models. Installation is straightforward with included EV1 injector harnesses and vacuum hose adapters in multiple sizes (1\/8”, 1\/4”, and 3\/16”). The plug-and-play design minimizes the need for custom wiring or modifications, allowing for a clean and professional setup.\u003c\/p\u003e\u003cp\u003eFor boosted applications, the internal MAP sensor can be disabled to accommodate an external MAP sensor, with a terminated connector provided for seamless integration. The compact ECU can be mounted in virtually any location, but it is important to orient the 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 Max ECU (Engine Control Unit)\u003c\/li\u003e\n\u003cli\u003e3.5” touchscreen handheld controller with calibration wizard\u003c\/li\u003e\n\u003cli\u003eEV1 injector harness\u003c\/li\u003e\n\u003cli\u003eBosch LSU 4.9 wideband O2 sensors\u003c\/li\u003e\n\u003cli\u003eBuilt-in 1 bar MAP sensor with external MAP sensor connector\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 for laptop\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eIdeal For:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Holley EFI Terminator X Max is ideal for enthusiasts and builders seeking a reliable, feature-rich EFI system for their 2003–2006 Chrysler Gen III HEMI engines without variable valve timing. It suits a wide range of builds from budget-friendly street cars to boosted race vehicles, offering advanced tuning capabilities and expandability at an accessible price point. Whether upgrading from a carburetor or replacing a factory ECU, this system provides the control and flexibility needed to maximize engine performance and drivability.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":47315668500692,"sku":"550-1420","price":2299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/3458_37e49631192019cdcdfda3ff8addad605dc3e06c_a9511658-7eea-44f0-8c2d-26ed881672e2.webp?v=1766655089","url":"https:\/\/fasthemis.com\/products\/holley-efi-terminator-x-max-2003-2006-gen-iii-hemi-550-1420","provider":"FastHemis","version":"1.0","type":"link"}