B-pipe?? WTF??

My engine kept over heating on my car. So i took it to the dealer and they said i need to replace a B-pipe. I have no idea wat that is. I was planning on putting on a DC cat-back neway if i do this will the B-pipe be removed in the process? ne answer will be of help. BTW i have a 92 gsr if that helps at all.

thanx in advance.:smiley:

“Speed doesnt kill its the sudden stop”

N/M did a search found the answer my bad.