well you gotta consider that his car trapped 84. With a 9.1 @ 84 you know he's pulling some crazy topend. So with traction i'd say he'd be deep in to the 13's.

 

I barely even used the gas pedal in 1st gear. when I did, all that hapened was wheel spin, and second gear wasn't much better. I really don't get good traction until 3rd. I was getting 9.6 before the turbo also, but I wasn't spinning nearly as much.