Compared to a few months ago when most everybody was in the high 14s and low 15s, now it seems everybody is running mid 14s to low 14s. I can only think of one thing- cause here in North America its cooler cause its closer to winter instead of the blazing summertime.

 

Yep, it's the cooler weather. You can also attribute the better ets to more experienced drivers. For every 10 degrees change in weather, I see atleast .1 difference in et. I went out today and ran with some other fellow Midwest Max owners. I ran a 14.75 in 70 degree weather which is damn close to my best of a 14.73 in 50 degree weather. I'm almost certain I'll hit a 14.5 in the cooler weather of later November.

Dave