{"product_id":"holley-efi-terminator-x-max-2007-2012-gen-iii-hemi-550-1422","title":"Holley EFI Terminator X Max Gen III HEMI EFI Controller: 5.7L \/ 6.1L \/ 6.4L Engines (2003-2015)","description":"\u003ch3\u003eHolley EFI Terminator X Max Gen III HEMI EFI Controller\u003c\/h3\u003e\u003cp\u003e2003–2013+ Chrysler 5.7L \/ 6.1L \/ 6.4L GEN III HEMI Engines\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e550-1422\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Holley EFI Terminator X Max Gen III HEMI EFI Controller 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 equipped with the factory Drive-by-Wire (DBW) throttle body, this controller is tailored for non-VVT applications. Whether you’re building a street-driven muscle car, a track-ready race machine, or a boosted setup, the Terminator X Max delivers precise fuel and ignition control with advanced features that simplify tuning and maximize engine performance.\u003c\/p\u003e\u003cp\u003eEquipped with a user-friendly 3.5-inch touchscreen handheld and backed by Holley EFI’s industry-leading software suite, this system offers both plug-and-play convenience and deep customization options. It comes preloaded with base maps for common HEMI engine configurations, enabling quick startup and fast tuning to get you on the road or track without delay.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Terminator X Max EFI Controller integrates advanced technology and versatile inputs\/outputs to meet the demands of modern performance builds. Key features include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePlug-and-play compatibility with Chrysler GEN III HEMI 5.7L, 6.1L, and 6.4L engines (2003–2013+) using factory DBW 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 option to disable for external MAP sensor use, ideal for boosted applications\u003c\/li\u003e\n\u003cli\u003eFour programmable inputs and outputs supporting electric fans, boost control solenoids, nitrous activation, and more\u003c\/li\u003e\n\u003cli\u003eAdvanced boost control strategies including boost vs. time, gear, RPM, and speed, plus boost safeties\u003c\/li\u003e\n\u003cli\u003eComprehensive nitrous control with channels for wet\/dry, progressive or non-progressive operation, and closed-loop AFR targeting\u003c\/li\u003e\n\u003cli\u003eMultiple advanced fuel and ignition tables (1D and 2D) for flexible tuning configurations\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”) allowing versatile mounting options\u003c\/li\u003e\n\u003cli\u003eIncludes free Holley EFI tuning software for laptop-based advanced calibration 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 Max EFI Controller features a rugged, compact ECU engineered for durability and ease of installation in a variety of engine bays. Its solid-state electronics are housed in a corrosion-resistant enclosure designed to withstand the harsh automotive environment. The included handheld touchscreen is ergonomically designed for intuitive navigation, featuring a bright 3.5-inch LCD that simplifies calibration and real-time monitoring. Holley’s engineering ensures seamless integration with factory sensors and actuators, minimizing wiring complexity and installation time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation \u0026amp; Fitment:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis EFI controller is designed for straightforward plug-and-play installation on Chrysler GEN III HEMI engines from 2003 to 2013+ with factory Drive-by-Wire throttle bodies, excluding VVT models. The kit includes an EV1 injector harness and vacuum hose adapters in multiple sizes (1\/8”, 1\/4”, and 3\/16”) to facilitate sensor connections. The internal MAP sensor can be disabled to accommodate external MAP sensors for boosted setups, with a terminated connector included for easy integration. The compact ECU can be mounted in virtually any convenient location, but diagnostic LEDs should face 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 Gen III HEMI EFI Controller ECU\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\u003eVacuum hose adapters (1\/8”, 1\/4”, 3\/16”)\u003c\/li\u003e\n\u003cli\u003eTerminated connector for external MAP sensor\u003c\/li\u003e\n\u003cli\u003eFree Holley EFI tuning software for laptop\u003c\/li\u003e\n\u003cli\u003eComprehensive base maps for common HEMI engine combinations\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 professional builders seeking a reliable, feature-rich EFI solution for Chrysler GEN III HEMI engines without variable valve timing. It suits a wide range of applications from naturally aspirated street cars to boosted race vehicles and nitrous-equipped setups. Its combination of plug-and-play ease and advanced tuning capabilities makes it perfect for both first-time EFI users and experienced tuners looking for precise control and expandability at a competitive price point.\u003c\/p\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":47315668631764,"sku":"550-1422","price":2299.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/8542\/1268\/files\/3460_5a3b09030b7bc46d7dfd88edbd6b820f809db803_405b2a70-f81c-4456-a76f-fb68d1c21a2a.webp?v=1766655088","url":"https:\/\/fasthemis.com\/products\/holley-efi-terminator-x-max-2007-2012-gen-iii-hemi-550-1422","provider":"FastHemis","version":"1.0","type":"link"}