If your car is in good tune, and you can nail a 2.0 or better 60 ft time, then you should be able to hit mid/high 14's at 8 psi. The 60 ft time is what you really need to concenrate on. For every tenth you take off the 60ft, you take off approx 2 tenths in the end 1/4 time. I just ran a 14.6 with a 2.3 60 ft, at 13 psi, so i know i should be able to run at least a 14 flat, if not very high 13's at 13 psi, IF i can nail a sub 2.0 60 ft time(for 13's). Doing that on street tires, FWD, and stock struts, isnt going to happen for me hehe.. If you want the best times possible, get good drag radials(eg. Nitto 555's), take as much weight off of the rear as possible(to lessen weight transfer to the rear when launching), and get adjustable shocks for the rear, and set them as stiff as possible. With that setup, you should nail some really good 60 fters, providing you can launch it well.