Reverse scoops are not nonfunctional... They allow much of the heat to escape the engine bay. Cosworth would not be using them for years if they were "nonfunctional and leaky". Frontward scoops cannot be used for "ram air" unless the intake is specifically designed for such a purpose. With all that air coming in its just going to increase drag and blow the air all around the engine compartment with very little "ramming" into the air filter.
