It may be, "don't ask, don't tell" in other states, but I believe it's illegal in any US state to remove catalytic converters altogether.

You should be okay with registering in another state, or you still might pass with an OEM exhaust and intake.

In your case I would not recommend trading in your car in, like I ended up doing with my non-legal-motored Civic.

 

Pretty sure Arizona and Washington are your best choices from CA, but don't quote me on that

 

lol come to florida you can do anything you want there is no inspection fee's all they do is check the vin number and the mileage lol florida owns no inspection at all

 

^yea MN doesn't have any inspections at all.

yesssssssssssss

 

Neither does Wisconsin!

 

Arizona is fine as long as you don't register in the Phoenix and Tucson areas. Try Flagstaff.

 

move to colorado passing is easy here everything can be bought trust me for a hundred bucks thats iit

 

just take the kit off, buy a stock header, midpipe, and intake and youre good. its a biotch to do but its got to be done. registering out of state would be harder because then you could just get in trouble for having out of state registration.
idk how much it is if you dont go to the state ref but if you do its like 390. i got one like six months ago.