It sux.
Agree with Ardius,about the only time I ever used it and could be competitive was back when the lower pp event at Daytona oval was around.It's definately not a Suzuka or Fuji car,however I have used it on HSR and had some degree of luck,depending on the pp of the event and what cars I am up against.I really would like to be able to use it more though.
If you think the XK understeers you are driving in standard mode.