I changed out the intake manifold gasket and am in the process of putting all of the connections back together. Intake/plenum is already on the car, as is fuel rail/injectors. On the back of the plenum there is a little T shaped connector that I can't seem to find what went into the left side of it.

You can see it on the back of this picture at the back of the Y plenum:



It's the little T shaped thing just to the left of the the right side of the "Y".

Does anybody know what goes in there?

 

ill try to get some pics from my car and post them up tomorrow to see if it helps you a little.

 

That would be great. I think its some sort of vacuum hose that operates the A/C because the blower only comes on in the foot well and not through the vents. We already reassembled the engine and just plugged the hole for now.