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California Exhaust Laws

Old 05-19-2003, 01:26 PM
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Default California Exhaust Laws


Vehicle Code
Regulations Governing Exhaust Systems

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 Society of Automotive Engineers Standard J1169 May 1998.

(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.

The above was pulled directly from http://www.dmv.ca.gov.

The reason why i am posting this is because i like many other motorists in CA are plauged by CHP and other cops giving modified exhaust tickets like crazy. Despite my calm reasoning with cops on the laws and DB level for exhausts... the best they could do is say "tell it to the judge."

To my understanding an exaust is only illegal in CA if it does not retain a functioning Catalytic converter and/or is louder than 94DB.

Since most systems are CAT BACK systems they do not effect emmissions as long as you retain your stock Cat. thus the reason there is no CARB number on exhausts.

So back to my point. Do they send you to the REF now to test the DB level of exausts and can you recieve a badge like you would for a swap that is REF certified?

[(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 Society of Automotive Engineers Standard J1169 May 1998.]

I am hoping for this to be the official CA Exhaust Law post. Any input is welcome.
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Old 05-19-2003, 01:45 PM
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Default Re: California Exhaust Laws (Civtek)

I had no poblem getting my car certified with the exhaust on it, but they didnt do anything about the actual exhaust, so it could be that unless you are sent there for exhaust they don't do anything about it.
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Old 03-18-2005, 09:54 AM
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Default Re: California Exhaust Laws (psileepR)

good looking out. keep this up
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Old 03-18-2005, 10:00 AM
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Default Re: California Exhaust Laws (88 Crx Si)

This is a good writeup by Luserkid on how to get cleared for your exhaust tickets, it includes the State Ref contact info, pictures of the process, etc:
https://honda-tech.com/zerothread?id=867722
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Old 03-18-2005, 10:14 AM
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Default Re: California Exhaust Laws (purplegsr (Exospeed))

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by purplegsr (Exospeed) &raquo;</TD></TR><TR><TD CLASS="quote">This is a good writeup by Luserkid on how to get cleared for your exhaust tickets, it includes the State Ref contact info, pictures of the process, etc:
https://honda-tech.com/zerothread?id=867722</TD></TR></TABLE>

What people need to realize about this is that at any time a cop can order you to go back to the ref if he believes the exhaust is louder that it should be. The sticker doesn't mean **** if you passed with stock equipment and then go change it back to the illegal stuff. This in no way makes your illegal exhaust legal like it implies.
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Old 03-18-2005, 10:30 AM
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Default Re: California Exhaust Laws (Z)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Z &raquo;</TD></TR><TR><TD CLASS="quote">

What people need to realize about this is that at any time a cop can order you to go back to the ref if he believes the exhaust is louder that it should be. The sticker doesn't mean **** if you passed with stock equipment and then go change it back to the illegal stuff. This in no way makes your illegal exhaust legal like it implies.
</TD></TR></TABLE>

Totally true, but some people might still find it useful.
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