My best time was a 13.2 stock. Doing this:
1) Traction Off
2) Manual Mode
3) Get the tires hot
4) Pull up to the tree, brake mashed as hard as you can
5) I try and REV up to 2-3k and then pedal to the metal.
I tried this in "D" and my time was slower by about :2 seconds. I ran a 13.4/13.5 consistently in D
Heres a 13.31 just for fun. Watch in 1080HD