Ram air problems
Problems with ram-air? Yes there are!
If you have a car with ram-air, especially one that isn't factory, you're gonna limit when you can drive the car.
"Huh? whattheheck is this guy talking about?" I hear you guys out there.
Well, that scoop is gonna be open 24/7/365. You're bound to run into some rain sometime! Not all of us are blessed with sunny skies year round. Where do you suppose any rain is gonna go? Right into your aircleaner base. You'll have to install a drain and tube in your aircleaner base to get rid of most of the water. Yes, most. You won't get rid of all of it, and most stock bases have humps and lumps outside of the element ring. Its gonna slosh around and get your filter element all wet. Wet elements don't breathe.
OK, see the problems here?
Why do you suppose that the factories don't provide ram air to all of their cars, especially if clean cool air makes the engine run better? There must be reasons, and only one of them is cost!