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  1. #1

    New Exhaust Law in California

    So..., California is at it again. Has anyone been hassled by cops for noise yet? I run a Corsa on my 98 and know that it is too loud for Laguna Seca, as well as the street, after Jan 1. Now frickin what? Between smog, front plates, pothole ridden roads, electric/hybrids cars, proliferation of SUVs and x-overs causing manufacturers to drop whole segments of offerings, and now exhaust noise. It seems that the 21st century is closing in on our love of cars, and the truly fun and "free spirited" days may be behind us soon. In any event, I wonder if they will buy the, "I bought this car with this exhaust" line will work on the dickhead cops that have time to screw with us out there. Just for giggles, can you still even get a stock exhaust for a Gen 2 anymore?

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    I foresee a lot of exhaust systems going up for sale in California. I should drive my loud ass 99 to Cali to let them try to ticket me. that would be fun to see them try and collect.
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    I guess my 127db Viper wouldn't fair well in California?

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    Sorry to hear that. It seems what happens their happens to the rest of the states eventually.

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    Quote Originally Posted by 99RT10 View Post
    I foresee a lot of exhaust systems going up for sale in California. I should drive my loud ass 99 to Cali to let them try to ticket me. that would be fun to see them try and collect.
    Mike, I'll call the "tip" line and give then your address!!

    Maybe I'm getting to old but half the 20 year old here runs without mufflers. Nothing like a pack of 200 hp cars emitting 110 decibels at 2 am on a weeknight in your neighborhood. A redneck like you would be in jail by now if you lived on my block!!
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  6. #6
    Quote Originally Posted by Solid Red 98 View Post
    So..., California is at it again. Has anyone been hassled by cops for noise yet? I run a Corsa on my 98 and know that it is too loud for Laguna Seca, as well as the street, after Jan 1. Now frickin what? Between smog, front plates, pothole ridden roads, electric/hybrids cars, proliferation of SUVs and x-overs causing manufacturers to drop whole segments of offerings, and now exhaust noise. It seems that the 21st century is closing in on our love of cars, and the truly fun and "free spirited" days may be behind us soon. In any event, I wonder if they will buy the, "I bought this car with this exhaust" line will work on the dickhead cops that have time to screw with us out there. Just for giggles, can you still even get a stock exhaust for a Gen 2 anymore?
    Not to bring politics into this but its funny how California is worried about loud exhausts from Americans that have fun with their cars while illegals jump the border and costs the people of California a billion a year in medical costs and ect...

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    Time for you Californians to move to Arizona:

    Arizona does place some restrictions on modifications to your vehicle that can affect the sounds that it produces, such as the stereo system and muffler. While the state does not put any restrictions on the decibel levels of the sounds, there are requirements that may be subjective on the part of any officer called or who hears the sounds.
    Sound system
    Radios can’t be played at a volume that disturbs the quiet, disturbs sleep or annoys those who hear it, especially between the hours of 11 PM and 7 AM
    Mufflers
    Arizona muffler laws include:
    Vehicle mufflers must be equipped and in good repair so as not to produce “unusual or excessive” noise levels.
    Bypasses, cutouts, and similar devices are not allowed on vehicles driven on the highways
    Exhaust systems must not permit excessive smoke or fumes to be released into the air
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    Dibs if you decide to sale the Corsa!

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    Quote Originally Posted by RedTanRT/10 View Post
    Mike, I'll call the "tip" line and give then your address!!


    Maybe I'm getting to old but half the 20 year old here runs without mufflers. Nothing like a pack of 200 hp cars emitting 110 decibels at 2 am on a weeknight in your neighborhood. A redneck like you would be in jail by now if you lived on my block!!
    Stay the hell out of my neighborhood also. As the exhaust and Stereo sytems keep getting louder, guess what the rules regulating them will get tighter.
    If you need to have a ground shaking window rattling exhaust system then you will be the one that forces the change in the laws.
    I understand that the OP thinks he should be able to run whatever he wants to and to do it with no regard to anyone within ear shot he goes, but I do not agree.
    BLRD

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    Quote Originally Posted by Desert Venom Racer View Post
    Time for you Californians to move to Arizona:

    Arizona does place some restrictions on modifications to your vehicle that can affect the sounds that it produces, such as the stereo system and muffler. While the state does not put any restrictions on the decibel levels of the sounds, there are requirements that may be subjective on the part of any officer called or who hears the sounds.
    Sound system
    Radios can’t be played at a volume that disturbs the quiet, disturbs sleep or annoys those who hear it, especially between the hours of 11 PM and 7 AM
    Mufflers
    Arizona muffler laws include:
    Vehicle mufflers must be equipped and in good repair so as not to produce “unusual or excessive” noise levels.
    Bypasses, cutouts, and similar devices are not allowed on vehicles driven on the highways
    Exhaust systems must not permit excessive smoke or fumes to be released into the air



    You guys that voted dummycrat stay in that screwed up state and take it. We don't need your idiotic voting in the other 49 states. WA, CO and OR are already lost.
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    Quote Originally Posted by Solid Red 98 View Post
    So..., California is at it again. Has anyone been hassled by cops for noise yet? I run a Corsa on my 98 and know that it is too loud for Laguna Seca, as well as the street, after Jan 1. Now frickin what? Between smog, front plates, pothole ridden roads, electric/hybrids cars, proliferation of SUVs and x-overs causing manufacturers to drop whole segments of offerings, and now exhaust noise. It seems that the 21st century is closing in on our love of cars, and the truly fun and "free spirited" days may be behind us soon. In any event, I wonder if they will buy the, "I bought this car with this exhaust" line will work on the dickhead cops that have time to screw with us out there. Just for giggles, can you still even get a stock exhaust for a Gen 2 anymore?
    http://www.californiacarlaws.com/exhaust-noise/

    Vehicle Code 21750. Adequate muffler required
    27150. (a) Every motor vehicle subject to registration shall at all times be equipped with an adequate muffler in constant operation and properly maintained to prevent any excessive or unusual noise, and no muffler or exhaust system shall be equipped with a cutout, bypass, or similar device.

    Vehicle Code 27151. Modification of exhaust systems
    (a) No person shall modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise emitted by the motor of the vehicle so that the vehicle is not in compliance with the provisions of Section 27150 or exceeds the noise limits established for the type of vehicle in Article 2.5 (commencing with Section 27200). No person shall operate a motor vehicle with an exhaust system so modified.
    (b) For the purposes of exhaust systems installed on motor vehicles with a manufacturer’s gross vehicle weight rating of less than 6,000 pounds, other than motorcycles, a sound level of 95 dbA or less, when tested in accordance with Society of Automotive Engineers Standard J1169 May 1998, complies with this section. Motor vehicle exhaust systems or parts thereof include, but are not limited to, nonoriginal exhaust equipment.


    So The interpretation is that all exhausts need to have a muffler installed that's in "working condition", and you can't install an exhaust that's louder that 95 dbA.

    No doubt this might be tough, but 95 dbA is pretty loud. You are just going to have to add some muffling.

    According to the SAE, J1169 1998 was revised in 2007, and SAE's website says that J1169 2007 and was canceled and replaced by J1492.
    https://www.sae.org/standards/content/j1169_200707/

    SAE J1169 is titled "Measurement of Light Vehicle Exhaust Sound Level under Stationary Conditions". The Abstract of the spec says "Technology changes have occurred that make the SAE J1169 procedure inadequate." J1492 is titled "Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method".

    But don't you worry about that. California uses the 1998 version by reference. This might be something that can be checked on the roadside by a police officer. You can buy a copy of J1169, but it's $81 and I'm not spending that. lol

    My IHS summary mentions "SAE J1169 is a legacy test that specifies 3/4 maximum rated engine speed (MRES) as the test condition."

    My guess is that if you get pulled over for a suspected out-of-compliance exhaust, the cop might be able to make you rev it to 3/4 of redline and hold it there while they measure the decibel level at some distance. I do not read this law to say "all aftermarket exhausts are illegal". It just sounds like you can't install one that make it louder than 95 dbA during a roadside test. J1169 has nothing to do with vehicles under load, so keep that in your pocket if you wish to argue.
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    Million dollar question will be if they eventually make it a mandatory pass/fail test during inspection.
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    Quote Originally Posted by 99RT10 View Post
    You guys that voted dummycrat stay in that screwed up state and take it. We don't need your idiotic voting in the other 49 states. WA, CO and OR are already lost.
    Seriously, Not all of us are "You Guys."
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  15. #15
    Quote Originally Posted by Bryan Savage View Post
    No doubt this might be tough, but 95 dbA is pretty loud. You are just going to have to add some muffling.
    Does anyone have a reference for how loud 95 dbA would be? I found this video, but it's not quite translatable to a Viper.

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    Get an SPL meter app for your cell phone. Or move to a non communist country that doesn't mess with your car. Like Texas.
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    Quote Originally Posted by dave6666 View Post
    wait till occasional kotex passes her green bill.
    lmfao
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  18. #18
    You guys gave it so good in CA. In CT, we have a 74 db (stationary), 74 db (< 35 mph) and 81 db (> 35 mph) limitation.

    https://www.cga.ct.gov/2009/rpt/2009-R-0205.htm
    Last edited by AviP; 01-08-2019 at 08:08 PM.
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    Quote Originally Posted by harley56 View Post
    Seriously, Not all of us are "You Guys."
    Maybe not all, but willing to bet most are. Hope it bite those that are in the ass............. hard.
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    Quote Originally Posted by Desert Venom Racer View Post
    Time for you Californians to move to Arizona:

    Arizona does place some restrictions on modifications to your vehicle that can affect the sounds that it produces, such as the stereo system and muffler. While the state does not put any restrictions on the decibel levels of the sounds, there are requirements that may be subjective on the part of any officer called or who hears the sounds.
    Sound system
    Radios can’t be played at a volume that disturbs the quiet, disturbs sleep or annoys those who hear it, especially between the hours of 11 PM and 7 AM
    Mufflers
    Arizona muffler laws include:
    Vehicle mufflers must be equipped and in good repair so as not to produce “unusual or excessive” noise levels.
    Bypasses, cutouts, and similar devices are not allowed on vehicles driven on the highways
    Exhaust systems must not permit excessive smoke or fumes to be released into the air
    Never had an officer care or hear about an officer caring about exhaust sound in Arizona. These "rules" I think are the norms for most states and up to the officer discretion.
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  22. #22
    So upon further research, it looks like the core law hasn't largely changed, but the enforcement has. Here's what I gather:

    • The noise limitation is not new. A limitation of 95 dbA has always existed and that did not change with this law.
    • The citation has changed. You're now guaranteed a $1,000 fine (though some sources say it could be as "low" as $200) and a trip to the State Referee. In the past, the officer could choose to issue a Fix It ticket instead, but the fine was still an option. Now the Fix It ticket is gone and the fine is guaranteed. With that said, the officer could still choose to issue a warning instead.
    • The enforcement has been broadened. It gives a lot of power to the officer, is deliberately vague, and targets modified exhausts.


    Supposedly, this is intended to crack down on street racers in LA, and I think there's some truth to that. But it doesn't change the fact that the law could be enforced in other ways (ie. to harass a Viper owner).

    However, because the noise limitation has not changed, I'm inclined to believe that this law won't affect us much. If you haven't been pulled over in the past for loud exhaust, you likely wouldn't be pulled over in the future. This doesn't change what gets you pulled over. It changes what happens after you get pulled over. At least, that's how I'm interpreting it. But time will tell.

    Has anyone here been pulled over for loud exhaust in the past?

    Quote Originally Posted by dave6666 View Post
    Get an SPL meter app for your cell phone. Or move to a non communist country that doesn't mess with your car. Like Texas.
    LOL trust me, I plan to do that. The SPL Meter app will be helpful for now though. Thanks.

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    I would agree that it may be unlikely that if you're driving along, minding your own business, and happen to have a loud car, it might be anything to worry about. But if you're shutting a street down with your posse to do burnouts and you have a loud car, there might be another charge added to your ticket.

    Think about this though... as more and more people switch to autonomous vehicles, won't there be fewer speeding tickets and less DUI money coming in to the departments' coffers? I would expect fines for everything else to begin creeping up slowly, to make up the shortfall. In ten years, you might start getting tickets for jaywalking!
    Last edited by Bryan Savage; 01-09-2019 at 01:46 PM.
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  24. #24
    Quote Originally Posted by Bryan Savage View Post
    But if you're shutting a street down with your posse to do burnouts and you have a loud car, there might be another charge added to your ticket.
    Definitely. The spirit of this law is to crack down on stuff like this.

    Quote Originally Posted by Bryan Savage View Post
    Think about this though... as more and more people switch to autonomous vehicles, won't there be fewer speeding tickets and less DUI money coming in to the departments' coffers? I would expect fines for everything else to begin creeping up slowly, to make up the shortfall. In ten years, you might start getting tickets for jaywalking!
    Absolutely. This is intended to be a cash generator for the state. The law (AB 1824) was sponsored by the Assembly Committee on Budget.

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    ^^^ Maybe register in another state?


 
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