so they honour the manufacturer motor and battery warranty with an aftermarket "chip" box ?
That is what they told me when I bought the bike. But it is only valid if they supply the bike and fit the speedbox at time of purchase. The chip put's no extra strain on the motor or battery and for me it would be worth it regardless of the warranty issue. 15 mph is not slow and you can spin along in eco and sit just below that threshold but I bought the bike for fun and for me when I'm on the road I find that in tour/embt mode 18 mph is the sweet spot. Riding on the edge of the limiter is not fun as the power drops in and out (to be fair the new Bosch motor deals with this better than most). You pays your money as they say.