Loads of it!
Haha.
I'm truth, we need a bit more info from you first.
What tyres do you run? What's the current suspension setup and have you added much in the way of adjustable parts?
As standard the s3 has very little adjustment, so you just want to max it all out.
My setup above is at - 3.5 degrees in that pic, but that's to run a Dunlop slick on track, most semi slicks wouldn't need that much.