You have to make sure the filters pre and post fuel pump are spotless, then use the mapping too to change the af ratios to a more reasonable level. Are you talking changing the mapping from the GYT-R programmer, or the Yamaha shop programmer? Because the GYT-R programmer only allows adjustments from 4000 to 9000 rpm, which won't help starting at all. If you're talking adjustments from the shop programmer, please elaborate on some specifics... I'm sure several on here will appreciate it. I already had the local dealer use the shop programmer for dropping the fuel mixture by 2%, which immediately made the bike re-starts better. The main issue is cold starting.