I understand what you are saying and I agree with you but what I am saying is that when the car is moving the pusher fan isn't working. When the car is moving the car is cooling enough that the pusher fan will not be running. It will be off because the temp will be not be high enough to kick the pusher fan on. The only time the pusher fan would come on is if and when you would get stuck in traffic and the temp would rise enough to kick it on and then it would assist the factory fan in cooling it down. While you are running at pretty much any speed the air would cool it down enough and the pusher wouldn't be on. I am not talking about having the pusher fan on a switch that runs all the time. It would be on a relay that when the temp rises above say 195* it would come on . That is the way I have it set up on the rat rod. It works fine.
