the weather makes a huge difference in how the car runs
on friday I was getting no traction, was able to get a best run of 15.60 with a 2.33 60' time (messing around with launch RPMs and launch technique allowed me to get at least one run where I didn't spin to redline in 1st gear). It was clear and cold but a weather front had just passed through so it was "humid" (it didn't feel humid but the humidity was relatively high) and the atmospheric pressure was probably still low. Now, this alone would cause 0.05 to 0.10 of a second difference.
