This is a highly discussed topic (in Maine).
The laws (in maine) conserning emissions & exhaust systems are loose and vague.
This problem leaves ANY state inspection station open to a wide interpretation of the intent of the law. In other words if the "inspector" FEELS that their is a "violation" of the Maine state inspection code the vehicle's pregistered owner is OBLIGATED for repairs to have said auomobile restored to state and federal mandates.
In other words....ANY Maine state automobile inspection station can and will set their own interpertation of the laws.