Quote Originally Posted by jaybquick@JHM View Post
It was in the mid to high 60s most of the day and got really close to 70. So it was definitely no huge advantage like if I was up north in 30 or 40 degree temps.

I haven't had enough of these cars to the track in different temps to get detailed data, but I would gestimate every 10 degrees F would add or remove .5 to 1 mph on a full run. This would also be affected by cool down procedures and if any ice was used or if they had our intake spacers or not.

NA cars don't see as drastic of a difference as Turbo cars with ambient. But I would say around 85 degrees or so these NA S4s would probably start to suffer more drastically.

I am basing this off my 15 years plus of racing NA Mustangs.

Thanks.
Thanks for the info. I ran consisten 14.0's on the quarter and was highly upset. I have normal tires and I had just finished driving 360 mi to get there when I did those passes. It was about 90 that day, and I still had my subs in the trunk (approx 70 lbs). I just wanted to know if that had a huge play. That or I just need to learn how to drive better.