throttle body

I modified an oem throttle body from a pre-cvvt based i4 betaII. The idea is the reduced shaft thickness creates less of an obstruction in the airflow through it and creates more area for flow through the stock bore. The exit taper behind the throttle plate should improve throttle response by...

Can anyone identify the input/output/nozzle/whatchamacallit/thingamajig I have circled on the attached picture. I decided to do the TB coolant bypass today and noticed this sticking out of my TB with nothing attached to it and what looks like a piece of plastic inside of it, like a plug which...