tire generate maximum traction (which = acceleration) at a small percentage of wheel spin (related to slip angle). for street tires it might be as high a 15%, for race tires it can be as low as 3%.
now, the tricky part. 15% spin (or slip as it is also known) is not very much. It is one extra rotation for every 7 normal tire rotations. if viewed from the outside it shouldnt look like a spinning tire (with the smoke and noise) it should look like a tire that is just about to start spinning. now this was just technical talk.
the bottom line is dont try to spin the tires, try to make them stick.
when i launch at auto-x (which can be similar to a drag launch) i usually only rev to about 3000 to 3500, and slip the clutch a little. hmm just noticed you have a 1.6L. well your car might be a little different. you really just need to practice, practice, practice, and dont spin the tires.
hope this helps.
May 2014 ROTM, June 2015 ROTM
for rally-x: '04 Liquid Grey ZX3
Build Thread: http://www.focusfanatics.com/forum/road-racing-rally/667378-thenorms-rally-x-build.html
Sold: '02 Infrared SVT