FUNCTIONS: Individual activation code to prevent unauthorised riders to activate the tuning. Completely unlock the motor for speed up to 28mph. Set your own speed limit to adjust or reduce battery consumption. All settings can be easily made using the display control buttons. The tuning is always switched off after switching on the bike. Correct total mileage of the bike even after removing the tuning module, as the milage are tracked in the motor control by the tuning module. Range calculation remain accurate even with the tuning active. Set a ‘softer control behaviour’ (dynamic mode) which reduces the annoying engine abrupt cut-off. This allows for a more pleasant driving experience and a constant pedal stroke. Battery percentage remain accurate even with the tuning activated. In active mode the battery range is calculated as: Interval: 4 second range, 1 second battery level. Workshop mode: Deactivate the module completely, e.g. if a workshop visit is due. The module is around 40 percent smaller than in the previous models for a better fit into the motor compartment. The electronics are completely encapsulated in the housing, making them absolutely waterproof. Does not require any diagnostic tool for installation. When connecting the VOLspeed tuning kit to your eBike you will find connectors colored to match the connectors on both the motor and the tuning kit to make installation easy. You would need to find Black (4wires) and Grey (2 wires) connectors. We have prepared a detailed video to make installation easy for you. VOLspeed for BOSCH assembly video VOLspeed Tuning - Bosch Smartphone Hub Customer satisfaction is our top priority. If you have any questions, don't hesitate to contact us. Legal Disclaimer: The operation of modified electric bike on public roads may be against the law in some countries. The seller takes no responsibility for damages resulting from the use of tuning products. Electric bikes equipped with tuning products can be used exclusively