it only happens when i am above 10k rpms. I replaced spark plugs woth NGK iridium. replaced air filter. checked for vacuun leaks. replaced fuel strainer filter.. replaced kick stand switch.. replaced o2 sensor. help! parts cannon not working! I have a fuel pump on order for next weekend but i am selling his bike soon and ik afraid i csnt find what it is.... any chance top injectors are bad? i placed in dealer mode and there are no codes.. 20 thousand miles 2011 gsxr 1000. one owner.