Quote Originally Posted by Arizona Vipers View Post
I'd have to guess nobody in Global Time Attack or similar programs have access to wind tunnels, it's all done by trial and error with lap times. They obviously know what they are doing.
The guy that owns this car is a good friend of mine, his shop works on my car, he built all this with his own hands, no wind tunnel, just lap times and his car will smoke mine or any other car on this forum-
https://motormavens.com/ums-tuning-c...er-lap-battle/
Sure trial and error could help, but very often they throw a lot of things at the car at once and don't always understand whether a specific mod was actually that helpful. Also as these things individually usually contribute fractions of seconds of improvements or not, variations in atmospheric conditions also may throw off any assessment of aero mods. Thats why wind tunnels are the only standardised way you can tell.