it could be your front springs/damper is too stiff/strong/hard??
at solodex recently, it made a HUGE difference in turn in and understerr/oversteer when adjusting teh damper of my AGX,
soft front hard rear = over steer

hard front, hard rear = understeer, no griphard front, soft rear = understeer more gripsoft front, soft rear = balance & more grip
now mind you the soft setting & eibach prokit is still a bit harder than stock.
and it also depends on your driving style, when you apply brakes, turn in technique etc..
my favourite set up is 2 up front damper setting and 7 in the rear.
with the whiteline swaybars i have controlling understeer and oversteer will help allot, as i will be able to controll body roll a bit and change the weight transfer to the outer wheel vs the inner wheel...
no i am no suspension guru,a nd these were based on my settings, driving conditions were wet too, so that had allot to do with it, if you are smarter than me and can make constructive commenst please correct me!!