Is 40 the cold pressure value?
Unfortunately, the car's suspension is set up for more daily driving than autocross. Heck, with all the tight turns in an AutoX, the car will behave better on a road track.
Basically, you want to utilize as much contact patch from the tires as possible. Check where the tire is wearing to determine how much you need to adjust the vehicle.
Some off the top things without knowing anything further -
Increase tire stiffness
Increase negative camber
Neutral Toe
Increase roll stiffness (thicker roll bars)
Lower and stiffen suspension (i.e. coilovers)
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