[Sebastiaan van den Heuvel]

Well with 100% throttle it doesn't turn very much. In fact when I feel the car oversteering I just slam the throttle and the back gets planted instantly.

You have to point the car on corner entry with the brake, doing a bit of trail braking. Sometimes the mentioned braking unstablity helps with that, the back of the car moves a bit but you can control it and stop it from rotate with the nose pointed just where you need. And then you can begin to apply throttle, or just slam it if you are sure the nose is pointed to the right place. Once you are on throttle, if you made a mistake and the car is understeering you'll have to lift, turning the wheel more will only make things worst. Sometimes just a bit of lifting (like from 100% to 80%) for a very brief moment is enough and you barely lose time.

This car's balance is very sensible to brake and throttle inputs, so just a little change on those and the car rotates much more or much less.

It almost sounds like you are saying to drive it like a FWD car... That's essentially how I drive the Abarth - trail brake and over rotate it into a corner, then hammer the throttle to straighten it out once you have the nose pointed where you want.

Well the way it handles makes it feel like a FWD car, if I even look at the throttle while taking a corner the car wants to go straight..