All right. First you have to load the transmission to around 1500 rpms to start, release the brakes and roll into the throttle as fast as possible. Air pressure depends on the track and prep. How fast you arrive to WOT depends on the track and prep. I never learned to launch with street tires so I won't pretend to guess at pressures with them. With drag radials it's the same story except you can push harder quicker. I like 17lbs. in the drag radials. If your car is stock you can expect 13.4 @ 104 to 106 depending on your altitude and temperatures. Practice is the only way to know what's going to work and every time I hit the track the thresholds have changed. Lots of practice on a private road before hand is preferable.

Les