I'm somewhat a noob to the whole truck scene. Only been on about a year or 2.
I was wondering, what is the metal tubing called that comes right after the headers. it connects the headers together and then runs down to the cat.

 

If I am understanding the question that is your Y-Pipe.

 

I believe you are talking about the collector

 

sorry was late and tired the collector is on the header epic failure

 

ahah no worries
ya y-pipe was what i was looking for
much appreciated