Gen 2 Hayabusa bogs down over 7500 RPMs

I have an 08 Suzuki Hayabusa , was out a riding went to get on it to pass a couple trucks. dropped a gear and hit the gas the bike bogs down.. I have changed the plugs thinking this was the Issue same thing still happens.... bike runs fine until i twist the throttle and brings RPMs above 7500.. its like the Secondary fuel injectors aren't firing...