[Kobura]

Aside from the looks, which are not attractive to me, I have been interested in the use of an air dam to reduce the air temperature in the engine compartment of my car. Using a remote air temperature sensor in the air cleaner housing, I have observed temperatures above 150 degrees F. It has been alleged that the hood scoop does not perform the function that it was intended to do, which is to provide a path of cooler air to the engine intake. The allegation seems to be correct according to my measurements. So, my limited understanding of car aerodynamics is that an air dam aids a car to "hug the road" due to the lower air pressures created under the car by the air dam. If this is so, it would seem that the air dam would increase the removal of hot air from the engine compartment as well. Is there any data available to prove this?