Actually, I tested the tiptronic, I consistently posted better times with it. They tell you not to use it, I was like whatever. . .you'll basically be in 2nd the WHOLE course, so it's better to keep her in the sweet spot using that, otherwise, the car shifts into third, and you'll waste a ton of time (or the comp will) downshifting in turns, you can just go into the turns at 5000rpms in 2nd as opposed to 2500 in third. . .
Suneil