Custom Exhuast O2 Sensor Question

[CSA]

I am considering having the front half of the rusty andl leaky exhaust of my 62 replaced with a custom exhaust. Will a good muffler shop have any trouble fabbing the mounts/bungs for the O2 sensors?

Also, is there anything that can be done about the funky y-pipe that crosses under the frame on the driver's side? I know some guys have gone to a single cat system, but that isn't a viable option in the Peoples Republic of California.

Many thanks.

 

[dd113]

Usually they will cut out the old bungs and weld them into the new pipe. They can also get new OEM style bungs. Not sure about CA but run 2 pipes to a dbl cat then one pipe out the back. Search here and the 3FE list.

 

[import silvia]

Also, is there anything that can be done about the funky y-pipe that crosses under the frame on the driver's side? I know some guys have gone to a single cat system, but that isn't a viable option in the Peoples Republic of California.

Many thanks.

Forgive my ignorance but I thought you were allowed to replace a failing exhaust system on a vhicle in the PRC. And since modern cats are much more effecient a single cat should be better since you would have both a more advanced cat and quicker light off.

 

[CSA]

You are probably right about a newer, single cat providing better performance, but the smog check guys will be looking for two cats. If they don't see two, it will fail the visual.

Forgive my ignorance but I thought you were allowed to replace a failing exhaust system on a vhicle in the PRC. And since modern cats are much more effecient a single cat should be better since you would have both a more advanced cat and quicker light off.