AutoTune ECM Performance Tuner

The ThunderMax is an award-winning, performance ECM built exclusively for EFI-equipped Harley-Davidson motorcycles. This stand-alone tuning system features proprietary AutoTune technology and wide-band oxygen sensors to provide enhanced performance and rideability. The system comes fully assembled and requires no cutting or splicing of wires for installation. It is designed as a direct replacement for the factory ECM and oxygen sensors. After installation, users load a map to optimize performance. Emissions Notice: This product is intended for "RACE READY" vehicles only and is not for sale or use on vehicles subject to emission control requirements. In California, it should not be used on vehicles registered for public road use. Consult the ThunderMax 50 application guide for "STREET APPROVED" and ARB compliant products. This specific model (309-382) is designed for 2012-2015 cable-operated Softail models, 2012-2017 Dyna models (excluding 110" Dyna models), and 2014-2020 Sportster models. It specifically excludes 2019 Trike® models.