It seems people here are not educated on these subjects.
Cowl hood
Cowl hood Induction
Hood Vent.
Honestly it dosent matter where the vent on the hood is. Air will leave your engine bay unless your cowl hood has it's own tunnel going back into the engine bay and directed to the air filter.
The cowls you're talking about to make space for superchargers and larger intake manifolds, also still let engine bay air out even tho it is located in a low pressure area. The air comming through the front creates enough + pressure where air will be blown out from under the hood and not enter it as some people believe when " Cowl Hood INDUCTION" comes into play.
There cars have their own pathway seperate from the engine bays air. a tunnel directed to the air filter.
I am sure everyone knows me from the hood vents i started to use and make for other fellow fc owners. There was a big arguement about it's effectiveness on on track so I will be testing and posting some results sometime in the future.
the big argurement was that it lets air enter into the engine bay lessening the effectiveness of cooling the engine bay. It does the exact opposite and lets more air out of the engine bay which in turn lets more air enter the engine bay through the front past the radiator which in turn makes cooling the engine and the bay more effective.You will have a lower + air pressure in your engine bay because more air can escape meaning air has more places to escape at higher speeds.
HOOD VENT