California Code, Vehicle Code - VEH § 27150.2

(a) Stations providing referee functions pursuant to Section 44036 of the Health and Safety Code shall provide for the testing of vehicular exhaust systems and the issuance of certificates of compliance only for those vehicles that have received a citation for a violation of Section 27150 or 27151.

(b) A certificate of compliance for a vehicular exhaust system shall be issued pursuant to subdivision (a) if the vehicle complies with Sections 27150 and 27151.  Exhaust systems installed on motor vehicles, other than motorcycles, with a manufacturer's gross vehicle weight rating of less than 6,000 pounds comply with Sections 27150 and 27151 if they emit no more than 95 dbA when tested in accordance with the most current SAE International standard.

(c) An exhaust system certificate of compliance issued pursuant to subdivision (a) shall identify, to the extent possible, the make, model, year, license number, and vehicle identification number of the vehicle tested, and the make and model of the exhaust system installed on the vehicle.

(d) The station shall charge a fee for the exhaust system certificate of compliance issued pursuant to subdivision (a).  The fee charged shall be calculated to recover the costs incurred by the Department of Consumer Affairs to implement this section.  The fees charged by the station shall be deposited in the Vehicle Inspection and Repair Fund established by Section 44062 of the Health and Safety Code.

(e) Vehicular exhaust systems are exempt from the requirements of Sections 27150 and 27151 if compliance with those sections, or the regulations adopted pursuant thereto, would cause an unreasonable hardship without resulting in a sufficient corresponding benefit with respect to noise level control.

(f) This section shall remain in effect only until January 1, 2027, and as of that date is repealed.