Some early FJRs had an issue which was called 'altitude sickness'. Rough running as altitude increased. I experienced this on a 2006 version climbing the Glockner.
Some research indicated that bikes experiencing this issue were subject to a recall and a new ECU fitted. My local dealer contacted Yamaha who were prepared to do the recall. In any event I chopped it in for a GSA so it never got done.
Some research indicated that bikes experiencing this issue were subject to a recall and a new ECU fitted. My local dealer contacted Yamaha who were prepared to do the recall. In any event I chopped it in for a GSA so it never got done.