It's part of the pcv system I believe, but not directly connected to the pcv valve or anything. I think it just sucks a very small amount of air into the intake manifold to aid in combustion. I can't remember for sure, so don't flame me.
98.5 SVT
91 Escort GT (almost sold)
96 ATX Zetec (i brake to watch you swerve)
FS: SVT rear sway bar
WTB: Very cheap beater
CEG Dragon Run - October 13-15
