Guys I have been having the same hesitation problem for over a year and it seems that nothing works. I cant pass 4,000 rpm in any gear except 1st. Sometimes I can pass 4,000 but rpms go up really slow.Also when I press the pedal all the way i feel the car hesitating maybe there is a blocking in the cataylic converter? Tell me what you think. Has anyone changed theres recently?

well, I don't know about not passing 4krpm in any gear, since all my bs seems to be from idle to just under 3krpm, but I'm gonna check that other really long thread again and maybe make up another post to compile everyone's information.