Well, here's my general approach: If I'm in top gear I break and listen to the engin down shift twice, at the exact moment of the second down shift I release the break, and turn the wheel, aiming the car at the inside apex of the turn. At this point I coast, let the engin drop 1 more gear, as soon as it does full throttle all the way through the turn.
Some trannies have more of a breaking effect than others, if you're loosing too much rpm, too quickly try repeatedly taping the gas to keep the rpm's up, but releasing before going to the next gear. That way you can maintain some speed through the turn.
thanx 
