I have a question regarding the fastest way to clear a tighter corner with my stock suspension CRX. It understeers, I realize it all the time. If I don't balance my throttle input I can turn the wheel all the way a open the throttle completely and I'll go in a straight line, kind of scary. But my question pertains to the balancing of throttle and steering in a corner. Say when driving around a corner at a low speed I turn the wheel x degrees to go around it. When I am trying to clear it as fast as possible I turn the wheel a little more and give a little additional throttle so that if I was going around it at a normal speeds I would be turning too much and I would hit the inside. The wheel is over turned and I give it additional throttle input. It feels like the front is sliding if you will. If I do it too much it feels slower like the front tires are slowing down the car because they are at too much of an angle and I loose traction. Also when doing this I can get back on the throttle earlier for a faster exit. It feels like I clear the corner faster but is this extra tire scrub really beneficial? What is riding on this threshold called? Is it better to clear the corner without overturning and more throttle?

Also what is left foot braking and how does it work?