Well my 1st question to you would be how long have you been autocrossing and what have you done to the car?

If this is your 1st or 2nd year autocrossing (with at least 10-20 events under your belt) don't worry about modifications or suspension settings. What you need to do is learn your car. Everyone thinks they know their car really well until a veteran drives your car. In most cases the experienced driver will always beat you.