Do catalytic converter need a break in period?

I'm getting my catalytic converter replaced tomorrow. I'm overdue for
inspection (my sticker expired in Jan) so I need to have the car inspected
ASAP before I get a ticket. Do new catalytic converters need any sort of
break in period before they are fully functional or can I drive right from
the repair shop to the inspection station immediately?

 

The converter doesnt need a break in period,if you have a check engine light
on then you will not pass emissions until it is cleared.
I suggest going to emissions anyway before changing the cat because
when you fail they give you a 30 day grace period to get your vehicle
repaired that would put your mind at ease about getting a ticket.
p.s. if you have to have your check engine light reset it may take a couple
days for monitors to reset.

 

I'd drive around for a few minutes (20 or so) just to make sure everything
is up to opperating temperature, because cat converters work best at higher
temperatures (regardless of if it's new or not) so if the inspection
stations on the other side of town you should be fine.

 

The 20 minute drive is required before any inspection, they won't do it
unless the engine has been running at least that long. I was wondering if
a longer period was required with a brand new converter.

 

Good advice. Even changing a muffler shortly before inspections can cause
problems from my experience.