Setup steer-in versus traction

[NoHachi]

Simple rule: Assuming the rest of the car is ok: increase front spring rate untill you get the turn in and roll angle you need, then increase rear roll stiffness until you get the steady state balance you need.

Other guidelines:
Corner entry at the moment of turning the steering wheel = alignment (mostly toe) and brake bias
Corner entry towards apex and exit = dampers and springs
Apex and steady state = springs and anti roll bars.

How are your front tires wearing?
My bet would be to try more front spring and more front camber
HIgher freq in front is needed to be able to accelerate in a corner, at perfect 50-50 freq and 50-50 f/r weight you are using the tires 100% for cornering, this is impossible because the rears need to transmit power and overcome drag. The higher hp, the more front bias you can effectively use. For a stock car start at 55% front minimum.

AE86s suck at tight low speed corners because of the rear axle (binds due to inequal length linkages). You probably noticed the understeer that produces. Your only option is to go equal length and fast (edge of traction) or to slide the car through (slower).

Try and find out your current roll balance by driving a big circle somewhere and seeing which end lets loose first. Also a good chance to check tire temps and pressures.