{"product_id":"thundermax-for-2021-2024-softail®-models","title":"ThunderMax for 2021 - 2024 Softail® Models","description":"\u003ch6\u003e\u003cspan\u003ePart Number: 309-592\u003c\/span\u003e\u003c\/h6\u003e\n\u003ch6\u003e\u003cspan\u003eNote: The ThunderMax 309-592 kit uses the same ECM as part number 309-591 but includes a specially designed ECM caddy for Softail fitment, making installation clean and secure for Softail models.\u003c\/span\u003e\u003c\/h6\u003e\n\u003ch6\u003eThunderMax is an award-winning, performance ECM designed specifically for EFI-equipped Harley-Davidson® motorcycles. This advanced, stand-alone tuning system uses proprietary AutoTune technology with wide-band oxygen sensors to deliver unmatched performance, rideability, and adaptability.\u003c\/h6\u003e\n\u003ch6\u003eThe ThunderMax ECM comes fully assembled, ready to install, with no wire-cutting or splicing required. Simply replace the factory ECM and oxygen sensors, load a base map, and ride. Installation is quick, and the system immediately begins tuning itself to your bike.\u003c\/h6\u003e\n\u003ch6\u003eWith built-in knock control for timing adjustment, ThunderMax offers precise spark management in real time. It retains full factory functionality and works seamlessly with factory systems. Wide-band O₂ sensors continuously read the air\/fuel ratio, automatically making live adjustments across every throttle position and RPM range. No dyno is required, and once you key off, all changes are instantly written to the ECM.\u003c\/h6\u003e\n\u003ch6\u003eThe ThunderMax software is\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e\u003ca title=\"Software Download\" href=\"https:\/\/store.thunder-max.com\/pages\/new-software-download\"\u003efree to download\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003efrom our website and provides full access to tuning tools, diagnostics, and data collection. Riders can monitor, record, and examine critical information such as engine temperature, RPM history, diagnostic codes, and more.\u003c\/h6\u003e\n\u003ch6\u003e\u003cspan\u003e\u003cb\u003eNotice:\u003c\/b\u003e ThunderMax ECMs utilize 18mm O₂ sensors. Factory exhaust systems are equipped with 12mm ports; however, nearly all aftermarket exhaust systems are manufactured with 18mm ports. If using a factory exhaust, you may weld in 18mm bungs. Bungs are not included.\u003c\/span\u003e\u003c\/h6\u003e","brand":"Square One Performance","offers":[{"title":"Default Title","offer_id":46134832103481,"sku":null,"price":1088.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/3033\/2985\/files\/AAA.webp?v=1782862010","url":"https:\/\/square1performance.shop\/products\/thundermax-for-2021-2024-softail%c2%ae-models","provider":"Square One Performance","version":"1.0","type":"link"}