S3 - keep the car in a straight line as much as possible and go into the corners far too fast, also use manual trans. sometimes it is best to change into 2nd to get the revs up and power up.
S6 - is tricky too, but really gun it, take no prisoners and rev the absolute nuts off the engine way into the red zone before it bounces then change up
I have literally just complete both of these, also help if you do it after a sleep, have a good shower and then your well awake are ready to go
Inte
p.s get the adrenaline running it always helps when you lean into the corners with the car