12-15 FXS/FLST,FXD12-17/ 14-17 XL THU/MAX

Made in the USA Easy installation: replace the factory ECM, install new oxygen sensors and harness, load the correct map for your bike, and ride Includes ThunderMax ECM with Auto-Tune Module, plug-in harness and two wide-band sensors, TMax software and communication USB cable, Quick-Start Easy Install and Comprehensive User's Manual, technical support and free software and updates Utilizes wide-band oxygen sensors and works as a closed-loop control system to continuously self-adjust and properly tune the motorcycle's air/fuel ratio for all riding conditions