jimGTS wrote:well considering the catchan attachs to the intake, its always "open" as such, just filtered...
i cant imagine it would "pull" anything in there
PCV hose from catchcan is connected to intake between air filter and turbo. accelerating makes vacuum here, thus it sucks out gases from the crankcase (and creates vacuum in the engine). if the drain hose of catchcan is left open, then there is no vacuum, just sucking unfiltered air throught the drain hose to turbo inlet because air filter is more restrictive than a hose with an open end. am i missing something?