get the chance I am going to install it in the TB hose on one side. Then make a drive with the vent open and one with it blocked off. That should tell me if the vent improves IC function. Intuitively it seems that the pressure from the ram effect at the front would be at least as high as the wheelwell pressure and the louvers point down directing the airflow to the bottom where the low pressure under the car should be sucking the air out of the well. These could have been mounted under the IC area just as well as here so if my test shows low improvement, I may move them.
