hey everyone. ive got an 01 zx9r with a full wiley co exhaust, stage one dyno jet jet kit, K&N filter and ignition advance. now the bike has just under 30k miles on it now. yesterday playing on the highway with my buddy on his busa..we were cranking...well as i was about to blow by 160...the bike started to bog down like it ran out of gas. so i got back into town...and noticed i didnt have any power after 5k rpms. i still have all my power from idle to 4 1/2k rpms...once i hit 5k or so it stumbles terrible. now i never saw any smoke comming out when this happend, oil is good and clean, antifreeze looks good...the plugs look normal..the temp is normal...my buddy mentioned it might be in a "limp mode"...i might have a bad safety switch or sensor. has anyone had this issue before, what the hell did i do to my poor bike!?!?