@nine_hundred
Map the throttle and brakes to the triggers is essential. You may have already done this - makes a huge difference if you can be a bit granular with input.
With this car I use TCS 2 or 3 - no more than that is required, don't be fooled by the immense slipperyness the first few laps.
Key thing for powerful, race cars on a DS3 is Active Steering - it really helps and you don't lose much speed.
So far I've used TCS: 3, ABS: 5, Active Steering: Strong, STM: Off, Controller Sensitivity: 0
The above in conjunction with Chuk's settings (Page 2 of the thread?) got me to this, so far
T1: 22.853
T2: 21.622
T3: 17.972 (Didn't realise this was quite so good til I saw the other times!)
Still don't understand turn 4 - there's like....nothing to spot with !? Rest of the lap is coming together quite nicely.
Didn't think I'd like this weeks event, but I do - I quite like the track and despite the fact the car feels like a cathedral on wheels, it's fun to drive on the soft racing tyre and not that tough to control. Still need to find some more time to be division-competitive.