Don't pull out that tube from the upper intake, that was the EGR- huge vacuum leak, that's why the engine revs. Go to dealer or check online for PCV harness. Unless,you feel you can make one? You'll want to connect a hose to the exposed nipple on the driver's side, and then adapt it to fit the fitting, the bolt is screwed into, on the passenger side of the intake plenum. I was thinking these had a "Y" type harness connecting both heads and the intake, but guess not. That will be the evacuation setup of the PCV, and will take care of your engine's breathing issues. The fresh air/breather comes from the hose connected between the valve cover and air cleaner/duct/box (I can't remember exactly which one). Now, that tube-for the EGR- it never went to the exhaust. It was attached to the EGR valve itself. The valve mounts on a pad as someone else described, that was cast into the left head. It contained passages from the exhaust portion of the head. When the EGR valve opened, it directed that exhaust into the intake, via that tube that has been hacked. So, you will likey never have a working EGR on this, unless the head was originally machined /cast for it. You may get lucky -It may be possible a block off plate was mounted to it, instead of an EGR valve, but I doubt it. After you get the PCV system together as I described, disconnect your battery, to wipe out the adaptive memory. This will get the engine to learn to run with a working PCV.
