I've done all the free mods and jd jetting(2006 wr450) and was just curious about the wide range of performance people seem to get out of their bike. For example at 5000ft. my bike won't pull mad wheelies in fourth (even with the air box cover temporarily removed) and it tops out at about 85mph. (streets) Has anyone riden theirs at sea level and then to, lets say +6000ft. elev. (typically what I ride) Do you experience a drastic change in your bike? With it jetted properly of course.