Tuned out understeering from the default, resulting in very fast setup, for both qualy and race. Tried leaderboard challenge, resulting in #1 spot in my 4th lap. For a mid-pack racer like me, this is pretty good.
When the car doesn't understeer, you can carry more speed into corners. I used TC-level of 4 (20%, IIRC) to help with corner exists. If the question was about the setup, I set brake balance a couple of notches to the rear, front ARB a click softer, rear ARB a click stiffer, front rebound a couple of clicks softer, then camber and pressure changes for the tires. Gear ratios were adjusted too.
Oh, and I most propably adjusted the differential too. Less locking, less turn-in understeer and more off throttle rotation.