What is "B" piping on a exhaust system?

[gregshin]

Can anyone answer this question please? Is this a down pipe?

 

[Howard]

I believe it is the pipe running from the exhaust header to the catalytic converter. I could be wrong, though.

 

[BCYL]

hmm... I always thought it's the pipe between your catalytic converter and your muffler...

 

[ThisIsMatt]

B? That's slow man, mine is R...

 

[Scootin159]

My guess would be that:

header -> cat. converter = a
cat. converter -> muffler = b
muffler -> end (tip?) = c (or normally called tailpipe).

 

[phatcow]

the b usually comes right after the Y pipe

 

[shadowscavenger]

a is from header to muffler
b is from muffler to end.

 

[Gonad the Barbarian]

http://www.greghome.com/Greg's%20Garage/1999%20Nissan%20Maxima%20SE/StillenB-Pipe.htm

 

[Howard]

According to that page, a B-pipe is the one that goes from catalytic converter to muffler.

 

[db]

If it's a Honda:

"A" goes from exh manifold down vertical, 90 degree to horizontal.
"Midpipe" is between "A" and cat.
Cat is next.
"B" is next downstream of cat.
"Muffler set" is last.


A-->mid pipe-->cat-->B-->muffler set.