Well not a 10sec slip like i hoped for but did good. Went to the track with coulple buddys and there built mustangs. I tryed out the new bogarts with the 315/60/15 MT et street radials and on first pass street tune cut my best ever 60ft of a 1.60. I loaded race tune and changed out upper pulley, iced the IC and the spinning started. 1st pass spun to a 1.85 60ft and second to a 1.79 60ft. before the nite was over we changed out the bogarts back to my AR bajas and 28" slicks. truck spun some but not as bad and got the best pass of the nite. My mph was off by 2mph all nite long. then temps never dropped like i wanted it to. at midnite when we left it was still around 75* and high humidity. I need to do some dattalogging for Jim sr. to look at and make some changes to the race tune. A/F was around 10.9-11.1 at WOT. Truck also Mph same with 28" tires as 30" tires. gonna order some QA1s in the very near future. Its a work in progress lol