[strictlypersonl]

To reduce understeer you can do one or more of the following:

Increase negative camber in the front end.

Increase toe-out on the front.

Soften the front damping or stiffen the rear's. That will only change the turn-in, not steady-state, but in an autocross, that may be what you are actually looking for.

Increase the front tire pressure or reduce the rear pressure.

Decrease the ground clearance all around.

Add a rear anti-sway bar (or stiffen the one you have.

Sometimes, if you have excessive roll, adding or stiffening a front anti-sway bar will increase corning power at the front too, but it will still feel like it's pushing.