SpeedBox: Electric Bike Tuning for Bosch, Yamaha, Shimano, Impulse, Brose and Bafang. … Tuning tools for electric bikes with Bosch, Yamaha, Shimano STePS, Brose, Impulse and Bafang Max Drive engines; developed, tested and produced by experienced programmers and designers in the Czech Republic.

Check out on youtube https://www.youtube.com/watch?v=XSZ7U11SrsY