Originally Posted by Racing

Ed.
Not to show off,but the truth is that my training is primarily within the aeronautic field.
For something as "slow" as a car,it is wise to focus on exhausting air rather than how it enters.
Entry points can always be made up easily by some intelligent placement of sheet metal.
Gettin rid of the gas is another story,and more often than not takes some serious logic and thinking cap on.

I´m also to an extent an advocate of the KISS principle.
Ie;In this case as the NACA is around,why bother trying to reinvent the wheel?

As for underhood temps in traffic(IOW low speeds or standstill),i woulnd´t bother all that much.
Another area where a SA would be of help as you´re able to make it go closed loop over a WB...leaving you with a deal where the WB will counteract the difference in airmass from the heat from a fuel amount point of view.