I can do much better, it was cold out tonight and traction was not that easy, next week I am getting 3.90 gears with my tax return and am shooting for 13.5 or better.
I launch at about 3.5-4k and do a good 5-10 second burnout. I slip the clutch, I do not drop it at all, I try to keep the front end of the car up all through 1st gear, somtimes I over use the clutch and it slows me down. But the more do it, the better I get at it.