Ok,
As I understand the purpose of the box is primarily to protect the filter from a barrage of dirt/water as well as providing non-disturbed air, like a plenum of sorts.
So is it safe to say that the Ody from factory was designed to work with a certain amount of vacuum in the box? And if so, what would the purpose of that be?
Shouldn't the engine/carb breath as much as is needs to?
Having said that, I noticed lot's of folks modify the box to get more air into the carb. Is this because the simply want more power, or is it because of the vacuum restriction that perhaps was a design mistake?