Chasing vaccum leaks on my 1998 Boxster 2.5.
i have a vaccum line from my left rubber sleeve on the plenum (Seen from behind). It is delivering vaccum to the fuel pressure regulator. The right rubber sleeve also have a similar hole in it, but this is blocked of with what seems to be a factory made metal stud.
Is this setup correct, or has someone modified the system, and if yes, what problems could this cause?