For those looking to get a bit more performance out of their Bosch-powered electric bike, the idea of doing an after-market "speed tune" has a certain appeal. In actual practice it is not only inadvisable, but it will void the warranty and risk damage to the drive unit. Piccadilly Cycles does not modify or re-program any of the drive systems we sell and service, beyond ordinary software updates or factory add-ons.
If you're in need of some more speed than the average USA-programmed electric bike, consider looking at any of the speed bikes currently on offer from Felt Electric and Haibike, among others. You'll be much better off in the long run.