Is their a difference in the B pipe for a 99 cali car vs a 96 fed spec?

 

There should not be any differences. The B pipe is after the cat - therefore has nothing to do with emmission control!!

Lo-Tse

 

fed spec has 3 O2 sensors.
cali spec has 4 O2 sensors.

95-96's rear O2 sensor is on the cat.
97-99 rear O2 sensor is on the b-pipe.

 

Thanks for the info. So the only difference is that there is an extra hole on the 99 B-pipe as compare to that of the 96. The key thing now is where is the 4th O2 sensor located in the 96 fed spec B-pipe??
I would have thought that the Cali spec exhaust have more sensors than thatof the Fed spec B one!!

Lo-Tse

 

i'm sorry, when i replied your question i guess i was in a hurry.

fed spec has 3 O2 sensors
cali spec has 4 OS sensors

therefore your 96 fed spec only has 3 O2 sensors.