ITRCA

I have a 01 ITR with aem cai, and dc jdm headers. I recently bought bfg gfprce drag radials. before the drag radials I was hitting a 60 ft time of 2.2 and now that I have the tires I launch at 6500-7000 rpm and the tires stick and the rpms drop to about 4000. I have tried riding the clutch a bit but 60 ft times are now 2.2 and 2.3 . Am I doing something wrong here?

A.) bring the pressure down to 14, do some runs, and check the pressure again
B.) do a dry burnout (not in the burnout box)
C.) launch at a lower rpm, like 3500 to 4000

with this technique, I hit 2.0 60 foots (my car is turboed though)