What sort of revs were you launching at? From previous experience at MMP i found usually if you hold the revs at about 3000rpm then drop the clutch and play with the throttle a bit on take off you should get a good run, i was getting 2.1 60ft times consistanly and running in the high 14's to low 15's.
Also gear changes help alot too! In a 20v you should be changing just befor redline and you may be able to hold it in 3rd over the line depending on the launch which means 1 less gear change and a quicker time