There is no problem to do a run on this layout with RB4.
RB4 was never a problem. Only on those tight autocross layouts.
Did I ever say it is a problem? 
no i did
I did to bring the fatcat to go XRT hunting more often. It is not as agile as before.
on a serious note. The layout flows pretty smoothly for the XRT ( duhh *** am i saying). The FZ5 will be praying it had more traction on the last section. As for the RB4, there is literally no room for errors. In order to clear the course, I need to heat up the front tires to 75 and the rear to 110. Short ratios are needed and some more adjustments to the torque split. Anyways, pain in the ass that is. By the time I reach the low speed section, I have some cooking hot front tires and something that used to be called steering.
Anyone brave enough to switch from the XRT to the RB4, I'd gladly help you out set up the car.
