rocketjohn
Top Fuel
Maybe, but you if save a copy of the original tune, you can restore it. But if they hook the bike up to the Ivory Tower they might still be able to tell the ECU has been written to. Your dealer would be instrumental in pleading on your behalf. And in fact to disallow the warranty in the US by law they have to show that your modified tune was responsible for whatever went wrong, and I doubt that would be the case, given the usual things that Rockets get warranty service for.