Totally stock, my best is 3.0 but usually I'll get a 3.1 or 3.2. My only tricks are to wait for cold air temps (~low 30's f) and launch off of a concrete road surface. Traction control off, auto mode and then just mash gas and release brake at the same time. I've found I get too much wheel spin with any power braking.
3.4s-62mph. Without launch control. Just let it rip from the light to the next light while being in track mode.
I want to try and manual shift at around 5,200rpm. I want to see what happens staying in the torque band. But it is really hard to get such a shift point with how hard it lauches