EBIKE TUNING FOR BOSCH SPEED BOX 3.0 vs. Volspeed V4 - YouTube
Tuning Chip E-Bike SPEEDBOX 1.3 B.TUNING 4 pin connector for 4 pin connector Assembly: invisible at the drive motor displayed: Actual values up to 23 km/h, then in app activation: light-button controls:
E-Bike E-MTB Tuning Kit PearTune 4.0 for Bosch (Not Smart System) – Two Wheels Empire