Tire psi needs to be between 25-30psi for streets. Just buy a set of DR's (mine are for sale). PSI for drags start around 25 but i usually run high teens. Your not supercharged so your psi wont be as low as mine. You really can't use launch control unless your on drags and the difference is huge ! Track prep and DA has a lot to do with it.
E92 M3 DCT...Powered by ESS VT2 650/DCT GTS Software/Aquamist HFS-3 50/50/Morr /Toyo R888's
ATCO RACEWAY: 10.65 @ 131.79MPH 1.725 60FT
(Stock ESS 625)