A friend who has a '04 1150 GS and myself riding my '09 1200 GS filled our bikes with ethanol free gasoline today and rode approximately 140 miles. I immediately noticed my bike not popping on decal and the throttle response was much better. It also seemed to smooth up the rough idle. I can't believe how pump gas makes the bike run so crappy. Wow! Has anyone else tried straight non ethanol gasoline in their bike?