I am not sure what the weather plays into these cars with all the computer adjustments that the sensors make. I have tried to figure out the weather thing for years on my car and it seems so many other parts of the drag race come into play other than the weather. I had the weather station, software, but it never seemed to really make a difference. It was fun trying to figure it all out. In a Viper its all about good reaction time, better suspension to keep the wheels on the ground, the right drag radials with 16psi, proper shifting, and the right gears for 1/4 or 1/8 mile. Each shift takes almost .5 of a second. I ran 3:73 and 3:54 I loved the 3:73 but it required a additional shift to finish the 3:54 was the one I an using now currently. going into 4th prior to the finish by a 100' or so. I think the perfect 3 shift gear would be in the area between these two. My best time was 11.55 123mph in my 2004 No matter what you have blasting your Viper down the strip is addicting.