2018 M4 M Performance exhaust legal in CA?? - Bimmerfest - BMW Forums



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F80/F82/F83 M3 and M4 (2015 - Current)
F80 BMW M3 sedan, F82 BMW M4 coupe and F83 M4 convertible forum. This 5th generation M3 and all new M4 features a 3.0 liter twin turbo engine (engine code S55) 425hp and 406lbs of torque! Heavy use of light weight materials makes this generation lighter and faster then the outgoing E9x M3.

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  #1  
Old 02-25-2019, 06:54 AM
aniksnaik aniksnaik is offline
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2018 M4 M Performance exhaust legal in CA??

i have a 2018 M4 which i ordered with the M performance package
this includes M performance exhaust which i really love and my default setting is in sports plus where its nice and loud
unfortunately my neighbor has complained about the sound for the 5 seconds it takes me to leave my garage and has referenced to some new CA law about the exhaust sound level


from reading about the CA DMV law 95 decibels / db is allowed

has anyone ever got a citation for exhaust sound ?
any thoughts?
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Old 02-25-2019, 09:07 AM
1zamboni 1zamboni is offline
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Old 02-25-2019, 11:25 AM
Mark K Mark K is offline
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OP, your neighbor cannot do anything about the guy down the street who drives his '70 Charger Hemi on leaded gasoline killing children and puppies with exhaust gases as he passes through the neighborhood, can he? If your car was kosher when bought and not modified since, he can pound sand or move.

Of course, it would help if you took him out to Starbucks and pointed that out way more nicely than I did.
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Last edited by Mark K; 02-25-2019 at 11:29 AM.
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Old 02-25-2019, 10:34 PM
aniksnaik aniksnaik is offline
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@1zamboni thanks

@Mark K : I wish that a coffee would fix our neighbors expectations
they find issues with everything that we decide to do including our choices of plants/trees in the yard, lighting and even our choice to have our gardener come on a day when we are free
we are not violating any city laws but they keep on giving not-so-subtle hints about their displeasure
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'18 M4 | Yas Marina/Silverstone | Comp Pkg | Exec Pkg | Blind Spot Pkg | Driver Assist Pkg | M Performance exhaust | M Perf package
'16 X3 35i | White/Saddle Brown | 20" M Double spoke wheels | DHP | Premium pack | Tech Pack
'08 328i | Black/Black | Premium | Sports | Navigation
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  #5  
Old 02-26-2019, 06:25 AM
hamm hamm is offline
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Quote:
Originally Posted by aniksnaik View Post
@1zamboni thanks

@Mark K : I wish that a coffee would fix our neighbors expectations
they find issues with everything that we decide to do including our choices of plants/trees in the yard, lighting and even our choice to have our gardener come on a day when we are free
we are not violating any city laws but they keep on giving not-so-subtle hints about their displeasure
That's ****ty having neighbours like that, reminds me of my dads strata. That exhaust is from factory (I have the same) and although louder they wouldn't put it on at the dealer if it violated any California laws, at least without your written consent. It seems like your neighbour will find something to complain about anyway, so enjoy your car and the beautiful scenery in SF, i love it there
p.s. just don't let it turn into an episode of Fear Thy Neighbour lol
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Old 03-02-2019, 11:04 PM
ard ard is offline
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If it was sold by a BMW dealer in CA, it meets CA noise limits
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Alignment here: The Definitive Alignment Thread

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OEM is Original Equipment Manufacturer... EITHER the company that made the OE part or.... A part this is identical to the OE part, but is sold by the OEM under their own label


OEM is not what BMW sells


http://www.bimmerzone.com/category/T...ricks_OEM.html

https://www.turnermotorsport.com/t-OEvsOEM
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