fuel pressure regulator vacuum diagram..

[jaimster]

hey Guys ,
so I have been chasing high negative numbers on LTFT both banks around - 18 % I think I m dealing with a Rich conditon - decided to test the fuel pressure

getting fuel pressure numbers with car off 48 psi , car running 58 psi also I m trying to test the fuel pressure regulator and vacuum hose problem is CAN NOT DETERMINE exactly where the vacuum hose goes for sure at the moment it is connected to what I think it may some kind of switch

wondering if anybody can help me with a diagram and are the fuel pressures correct and pressure regulator testing procedure ??

this relates to a 2001 boxster 2.7 manual transmission believe vacuum lines might be different than automatic !!