here is the deal...if you have emissions check, then yes, you would need it for visual inspection. I don't have emissions, so i said screw it (it didn't have one on my 7M either). All you do it just hook a vacuum hose onto the hardline and run it to the atmosphere. You will get the faint smell of fuel fumes, but it is fine. I have been doing this for 2 years without a problem.