Now that i have practiced the new braking technique i can truly comment the results. Regarding the time not so much, maybe lost second or two per lap. But the biggest differences are braking points and tyre wear. Before the lesson my braking points were off by staggering 10-20% compared to others! I know that anybody who was behind me was struggling with it cause i was all the time braking so early. Now that problem is gone and i can brake like the rest of the field.
I'm still suffering with the controller problem as i don't own a wheel yet but use a PS2 joypad instead. Half-throttle is still a dream only but hey, that's my problem.. I have find a some kind of compensation by turning the auto-clutch off as it gives me an opportunity to use engine-braking on the last part of braking to get the revs up and get the wheels on the correct speed before putting the "pedal-to-the-metal"..So much more grip at the last part of the turn that it's sometimes mind blowing.
As a result the consistency is up, confidence is up and i can race bumper-to-bumper more as i don't have to be afraid to knock some one out. I can regulate my speed more, when to push and when to drive more relaxed.
And tire wear.. Whoah! Before i destroyed my tyres with Mini in 11-14 laps (on Zandvoort), now i can do 22 laps easily. There are two reasons:i braked so early, long and had lockups all the time. Plus i had to steer much more having my front wheel angle way past the 10-15% what i have read,what is the optimal "oversteer" angle (not to be confused with oversteer as i'm talking about the difference of the racing line and the wheel-angle that has to be more than the corner radius to get past that corner on the correct speed). I had my front tires on full steering lock almost every turn and as you can imagine what that does to tyres.
I have to setup TS on club events so i can ask for more help in the future as these lessons are so rare but SO welcomed. Can't wait for the next one.