Yes and no. I ran at Mid Michigan the weekend before I went to Milan, so two weeks in a row, but MM was first and the air seemed to be just as good as this past Saturday. Please check the weather on Aug 30 2019 at 9.37PM. That was the time of the 10.401@129.75 pass. Thanks
I ran that weekend without the mechanical fan, then I put the mechanical fan on and went to Milan the next weelend to see what HP it would cost me, but the weather sucked and I lost 2 tenths and 2mph. I'm thinking the weather cost me a tenth and the fan another tenth.