Acceleration out of a turn is a transient thing, meaning dampers have more of an effect than the antiroll bars (although these have an effect on the whole cornering phase too), also there's the % lock of the diff, the rear toe setting, relative cambers front and rear, and ofcourse, your driving. You being a "new guy", you can hardly be surprised if the rear end of a FZR/XRR/FO8 gets away from you.. so just find a decent setup (setupgrid.net) and drive that until you can get within half a sec of some respectable race-pace. Reason for this is that your skills and objectivity are not yet on a level which allows you to make distinctions between what is a car/setup fault and what is your "driver" error. Even some very fast people will rather poke around at the setup insted of adjusting their driving technique to reach a goal, a real driver should be able to do both.