cat
as far as i know the big fine is just for a shop, and as far as getting thru a spot inspection all they do is write you an inspection warning and you have to put on cat and get only that inspected, if you get caught on road wiyhout cat you tell cop or dmv inspecter that you were working on car and the cat is no good and that you had to order one so thats why you are running a test pipe,, that usually works .... read the dark area from realfast and you see that it says you have thirty days to make operable and in good working order
as far as i know the big fine is just for a shop, and as far as getting thru a spot inspection all they do is write you an inspection warning and you have to put on cat and get only that inspected, if you get caught on road wiyhout cat you tell cop or dmv inspecter that you were working on car and the cat is no good and that you had to order one so thats why you are running a test pipe,, that usually works .... read the dark area from realfast and you see that it says you have thirty days to make operable and in good working order