I looked at the MAxFaq and it says that the B pipe "is the piping immediately behind the catalytic converter to the muffler." When you buy a cat back exhaust is that basically a B pipe with a muffler? I see some people have both a cat back and B pipe listed as their mods. For some reason I just thought that the B pipe was replacing the resonator, but is it really all the piping from the cat to the muffler?

 

anyone who has B-Pipe and Catback in their sig is a Sig Builder..

the Catback is as you said.. a B Pipe and a Muffler..

damn sig builders