I was ridding down a highway on my 06 250 GTS doing about 60mph and suddenly I lost speed. My throttle was still wide open but the bike started to slow down similar to that of letting off the gas. The engine didn't die. I closed the throttle and then tried to open it again and it came back but only for a second and in surges. It would surge and then cut out, surge again and then cut out. Did that for what seems like an eternity but I'm sure it was only 1-2 mins.
I slowed down to about 45mph and i wasn't able to reproduce the symptoms again (I got off the highway). I had about half a tank of 94 octane chevron gas so maybe the fuel pump was getting overheated from the highway riding ? I'm not sure what else it could be. Never had this problem before.