[suspect]

Does anyone have a line diagram for the engine cold side where the air box and charge pipe is? I have an intermittent 30ff code boost not meeting target. It happens randomly and the target would be 16.5 but it will only hit 13.5psi. Other times it gets 16.5-16.7psi.

I replaced the ofhg and disconnected three vacuum lines (#5,#6 and another going around the air box which I think goes to brake booster?) and the rear diverter valve. This has likely caused the issue and a diagram would help before I think of fixing a pinched intake manifold gasket.

On realoem I could only find the hot side vacuum lines.