Need Help Fast!!! Cobra Intake Install Question

What is the little port by the front of the intake by the Throttle Body. It point to the front and it is a little nipple looking like thing. I don't have any vaccuum lines to go to it, I don't know what it is for. I didn't get any damn instruction, but I am almost finished. Please Help
 
The little port on the front of the Cobra upper, right where TB connects goes to the charcoal cannister. The hose was previously up underneath the stock intake, on the front.

The charcoal cannister is in the upper left (passenger side, towards headlight) and is a black box with two circle inlets, general a white grating inside those holes.

Hope that helps. I had same question come up with my install a week or so ago.