where to tap in for a boost gauge

[kennydawgg]

where is the best place to tap in for the most accurate boost reading, A friend of mine has a wrx and his gauge is before the bov so he was getting higher boost levels than what was getting to the motor. can you tap a port for the hose in the upper ic pipe just befroe the intake and have you gauge work correctly? I have never hooked up a boost gauge before so I'm not sure exactly where it goes etc. I also have the boost hookup for my e-manage so would I just put a t where I am going to tap the gauge in and run a little hose to that too?

thanks
kennny