New Jersey Administrative Code
Title 13 - LAW AND PUBLIC SAFETY
Chapter 20 - ENFORCEMENT SERVICE
Subchapter 32 - INSPECTION STANDARDS AND TEST PROCEDURES TO BE USED BY OFFICIAL INSPECTION FACILITIES
Section 13:20-32.20 - Vehicle inspection: exhaust system requirements, all vehicles; vehicle inspection at official inspection facilities

1. An exhaust system in which the muffler is missing, defective, or not in proper operating condition;

2. An exhaust system if there is evidence of exhaust gas leakage at any point in the system;

3. An exhaust system if there is a muffler cut-out, muffler bypass, or any similar device, or any change or modification to the exhaust system that causes excessive noise;

4. An exhaust system that has loose or worn components or has been patched; provided, however, that an exhaust system that has been properly welded and is in good condition may be certified;

5. An exhaust system in which all parts are not properly mounted. The entire exhaust system shall be in such condition that it cannot burn or cause injury to any person. Exposed exhaust pipes, stacks, or other parts of the exhaust system that might burn a person or cause injury shall be protected in a permanent and effective manner; or

6. An exhaust system installed in a manner that causes any part thereof to pass through the passenger compartment of the motor vehicle. The exit point for the exhaust gas shall be located so that dangerous amounts of exhaust gas will not enter the passenger compartment under normal vehicle use, even with the windows open or the outside air inlets to the heater or air conditioner open. A replacement exhaust system is acceptable provided it is specifically manufactured for the motor vehicle by a company which guarantees that the exhaust system has a safe exhaust gas exit location.