[ItBites]

Thanks Cobrajeff. Makes sense for purpose. However it brings up a couple of other questions:

Is the vent mechanism closed by boost pressure? Does this setup have boost at idle or are the vents open then? If they are open at idle, is there no concern regarding unfiltered air into the engine?

Also, I don't see this vent on most more modern thru-carb boost systems. How do the newer setups get away without this functionality? or was this never really required and Shelby just put it on for good measure?

Just wondering...