That was with spraying? How much difference in degrees was it from this pass and your 12.46 without the pulley. The heat doesn't care how much mods you have. You should plug in these new numbers to the weather conditions from you best pass and calculate the improvement. It's too hard to test numbers without a baseline. I won't see the 12.50's again until winter. I'm over a 1/2 second slower in the heat.