THUNDERMAX ECM with Auto Tune - '17+ FLHT 309-588

Factory ECM tuning leaves performance on the table—the THUNDERMAX ECM with Auto-Tune gives you closed-loop control over your air/fuel ratio, ignition timing, and startup maps without requiring expensive dyno sessions. Load the map that matches your specific bike configuration, and the integral auto-tune module continuously self-adjusts for optimal performance across all riding conditions. This bolt-on replacement transforms throttle response, driveability, and exhaust character while supporting forced induction applications.

• Plug-in harness installation
• Includes dual wide-band O² sensors
• Adjustable front/rear cylinder AFR
• Adjustable ignition timing maps
• Closed-loop self-tuning system
• Live data logging capability
• Hundreds of pre-loaded maps available
• Idle speed adjustment
• Rev limit customization
• Speedometer calibration feature
• Supports turbo applications
• Supports nitrous applications
• Supports supercharger applications
• Compatible with high-performance cams
• Works all popular exhausts
• Free software and firmware updates
• Technical support included
• Made in U.S.A.
• Fits '17+ FLHT models
• Does not fit 2020+ RDRS