Originally Posted by Cristobal09

Correct me if im wrong as when it comes to cars you are definitely smarter than me when it comes to vehicles.

That isnt always true though, when he was tuned, the tuner most likely turned off the P0420 code that tells you your cat isnt working IF Mark has a test pipe or HFC. (Thats what they did with my evo). So when he goes to get emissions, itll read as "not ready" and theyll just fail him. I dunno, maybe MD is different than VA, but I just registered my Evo at my parents house in a county that doesnt have emissions. Problem solved.

If hes on stock cats though, should be fine most likely.