You would like to purchase a used eBike. The previous owner said that they made a "few improvements to the eBike components." What does this mean for you and your intended purchase?
Our advice: Pass on such offers. The Bosch eBike system is designed for maximum safety and durability, and all system components are controlled and monitored by extremely complex software. Any intervention in the system design will almost certainly have a negative effect on performance. Possible consequences: Your safety is endangered and use may be against the law.