Well first off, since I was driving my dad's yamaha racing go-kart with 18 HP and about 150 pounds before I ever got my license, I learned the importance of weight shifting. With the kart, if you go into a turn and don't use at least slight trailbraking and get on the gas right before the apex the thing will just plow like mad, but take the turn and shift the weight just right, and you can rip through any turn.
So before I ever sat in the drivers seat of a car I already knew the importance of weight shifting, which in my opinion is the hardest thing to master and the most important thing to going fast.
Now since my 02 is very balanced like the kart (very close to 50/50), and since it is underpowered, I learned from the begining to carry my speed through the turns.
Depending on the speed of the turn depends if I will use a trailbraking technique or just lift off. I usually do about 70 % of my braking before I start my turn in then right when I'm starting to turn in, I release most of the brake pressure and just feather the brakes to transfer just as much weight as needed to get the front tires to stick just enough, no need to transfer excess weight to the front as it will be needed in the back on the exit to keep the back from coming out. So I just tansfer as little weight as needed to get the front tires to grip.
I don't use crazy late breaking techniques. However, as I mentioned before the road I usually run (from westlake bvd. all the way through mullholland to las virgines) I have completely memorized so I know exactly which turn is next, and I can drive pretty deep into turns before braking simply cause I where the turn is going.
I sometimes use left foot trailbraking if needed to help the car turn in, but usually its not needed. That kind of thing is something thats really great to know you can do and to practice some incase you need it, but only use it if its necessary. don't go left foot braking everyturn. it shouldn't be needed so try to go without it.
Im sure your well aware of this, but the most important thing to being fast is being smooth. Never make quick jerky brake movements, or quickly lift off or get back on the throttle. You always want to lead into all your pedal and steering wheel movements.
Hope this was interesting to read. What kind of technique do you use?
<img src='http://files.unitedbimmer.com/ub.c/RealBmw%2002/Sig_ver2.jpg' border='0' alt='user posted image' />
1970 - 2002
Proud Memeber: 30+ year old car club