Originally Posted by newCrossfire
the lower pressure made the most dramatic difference. when i upped the pressure i saw a smaller difference in quarter mile time. so the higher the pressure the better the condition? i messed with all the fields being i didnt believe the results and im still skeptical of the results. but when i altered the pressure it made the biggest difference. the pressure i entered was the absolute baro which was listed on my time slip. this is the same as pressure right? i am a NA 6spd.
Usually the higher the elevation the slower the times. The pressure in my part of az doesn't vary that much usually never below high 29's. Even if you are off by .01 it will make a difference. I try to write down what times I actually ran, and hit accuweather.com and see what the weather details were at that time. I posted my fastest times corrected to Chi-Town's track on a post some time back. It was very interesting to see how close I was if I had ran at his track under the same conditions. Anytime someone posts a time, I usually like to find out what track and the time they ran. Then I can pretty much run the numbers. One of these months I'm going to pick the best track at sea level that is close enough to pack up and get there.