there is a spot just after the throttle body for 1 on inlet manifold, dont tee into others. option 2 get a threaded nipple with a m6 by 1.25mm thread drill into ur manifold 5mm drill bit tap thread, and bam u have a a vaccum source just for ur boost gauge remember to put grease on end of drill bit to catch all swarf n a vaccum cleaner

Into the inlet manifold/plenum. You want the ACTUAL boost going into the motors intake runners. Never T into anything else, because if you have a boost leak on the "anything else" or the guage hoses, you got problems

T it off the fuel pressure reg

boost guage shold hook to manifold

as it says.. just got a boost gauge for my ca and want to know the best spot to hook up from???? of the line from the wastegate????