Originally Posted by Jack ffr1846
So the short answer is:
Removing a cat from the system is illegal in Mass. (not mentioned is that it's a federal violation at $10k if they decide to prosicute you....I have never heard of the feds going after anyone)
Inspection without the correct equipment: they can fail you. They might not fail you, especially if they don't bother looking and you don't have any CEL.
It's all your choice.
So what I'm gathering is that as long as my computer reads fine, then it's just a visual inspection?