when you're tuning. Granted, they should have some airflow to at least simulate some cooling from moving. But you really want to tune for worst case scenario.
If you want to dyno race for a big number, do it in January :)
Petz #2
"What's the point of having the car if you don't drive it?" - Mrs. Guapo 08/20/05
Jeeeesus Christ - my Dad (after a ride in my Z) 12/26/04
People have the right to freedom of expression. However, people also have the right to point and laugh- aliaZ 04/06/06