Originally Posted by Infinite

on the na's its after the tb on the intake manifold. not sure where it is on the SRT's.
because they are supercharged and tend to have constant positive manifold pressure,it wouldnt function the same way after the tb so its probably before the throttle body somewhere on the intake. maybe an srt owner can chime in.

if thats the case, any pressure differential between the charge pipe and vacuum source wouldnt exist, so it would never open.