Do you have a rear sway bar upgrade yet? That would help you get rotation and deal with the understeer. I've had a pretty easy time beating more than one Type-R I've seen at my local events.

I have stock wheels/tires, stock sway bars, and I regularly see top 20-30 out of average of 80 entrants. What tires do you run? I use the Michelin PS4Ss and they seem to do a great job for me and the weather conditions in the NW.