i don't think most people in alabama know what "smog" is....a lot of em just learned about fog
but no emissions test and everyone swaps out their cat for a pipe.....if you work for a business and take off a cat, then u are supposed to put a cat back on....no regulations as far as what type, but it has to be some kind of functional catalytic converter.....if you don't and get caught, the business has to cough up 10K for the first offense...but most don't really care though...