Missing Vacuum line - help

[0-60n4]

I noticed on the passenger side of the engine, this sensor that has no vacuum lines connected to it.
what is this? Then I saw this Tee off a Vacuum line with no hose. Should those two be connected? Which barb on the sensor, center or outside?

 

[SCOOBY DOO]

If it's set up tuner style...then it won't be hooked up with vacuum lines.. Keep it plugged in...or it'll kick a code,

 

[Raeban]

The "T" with no hose looks like a vacuum leak. It is hard to tell from the picture but my guess is that is the hose that runs over to your map sensor and someone installed that T as a place to get intake manifold pressure for a boost gauge or other device.

As already mentioned the factory wastegate solenoid being unplugged doesn't necessarily mean a bad thing but if you can post a couple of other pictures (right side up) we can probably make sure you aren't getting into more trouble. Be sure to take a shot of the turbo inlet as well.