I know the Y-pipes are different between the two in number of pre-cats or O2 sensors. Also, exhaust manifolds.

But is there any difference in the catalytic converters, B-pipes and Mufflers?

probably not but i want to make sure.




thanks

 

nope, no differences in the exhaust after the Y-pipe

although there is an extra swirl can and four plugs(trying to think what they are right now but finals are melting my brain) instead of 2 on the federal specs

sorry if this post is worthless, but when dealing with the exhaust; very sure the Y-pipe is the only difference between cali/fed

 

thanks,

i'm looking to replace my stock exhaust which seems to be leaking air.. don't want to buy something that won't fit