So I tested
@praiano63 's tune for the nations race! (however I changed the car height, the front all the way up, as it seemed that the top times were being set that way, and also made the forth gear a little higher, as I didn't want to go to fifth gear before the second to last turn) This is how it went:
In qualy I set the third fastest time, I felt like I had the pace to get the pole had I nailed a lap. The car was feeling quite nice! (Y)
On the standing start I jumped the second place, the gear ratio for the start was just perfect!
However, the problem came as the race went on, my left front tire just busted, I went from 2nd to sixth by the last two laps... Now I'm not sure wether it was my driving or because of something in the tune. The racing was great, I was happy that I could perform well like that with little practice!
I'll probably upload the full race video later tonight!