Thundermax 309-592 for 2021+ Softail Models

The ThunderMax 309-592 is a high-performance Engine Control Module (ECM) specifically designed for EFI-equipped Harley Davidson Softail models from 2021 onwards. This advanced tuning system replaces the factory ECM and utilizes proprietary AutoTune technology to optimize engine performance and rideability.

Key Features

• Easy Installation: The ThunderMax comes fully assembled, requiring no wire-cutting or splicing. It simply replaces the factory ECM and oxygen sensors.
• AutoTune Technology: It features wide-band oxygen sensors that continuously monitor the air/fuel ratio, making real-time adjustments to ensure optimal performance under varying riding conditions.
• User-Friendly Software: The included SmartLink software allows users to select from hundreds of base maps tailored for various configurations, enabling quick setup and adjustments.
• Performance Enhancements: The system provides increased engine performance, smoother operation, adjustable idle speed, and rev limit control without needing a dyno.
• Adaptability: As modifications are made to the motorcycle (such as changes in pipes or cams), the ThunderMax can easily accommodate these changes by loading new maps.
• Warranty and Support: It is backed by a 3-year warranty and offers free software updates accessible online.