Originally Posted by
Caddyshack
Wouldn't you need the (hot) air to be escaping through the vent to create the pressure differential or is it the fast and cold air passing over the vent that does it?
I am keen to add some vents but do not want it to look bad, was thinking of a naca duct orientated to draw air out.???
Yes air escapes through the vents, but its not this airflow through the vents that does the cooling, it allows the radiator, intercooler to work harder as it results in more airflow through them due to the increased pressure differential