Nice! I will have to give it a go. It's definitely a tricky one when cars get congested since it's very narrow passing outside of the main straightaway.
Sardegna, I almost do that race in my sleep. I don't think I've ever not seen the clean race bonus on it.
Just set the traction to 3 (I leave it on 1 by default, but since the update the cars are more squirrely and rightfully so), and the first 7-8 laps I keep the fuel map on 5 or if I shift at half RPM I keep it at 4. But usually at 5 for 6-7 laps, then lower to 4, and on the 10th lap I lower it to 1. Then I pit going into the 1tth lap since it's fuel is usually at .1 to .3 (only pit once) and change tires and full fuel and keep it set to 1 and go balls to the wall. I am usually in first place by the 5th lap after their pits.
Portilla and his Viper sometimes gives a good run, but he pits at laps 4, 8 and 12. So once I am first, I tend to keep it since I am 25-30+ seconds ahead.