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ok, habs endlich gefunden ( per zufall, hab´s schon aufgegeben danach zu suchen ).
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Section 27200 VC prohibits the sale of new motor vehicles that exceed the noise limits specified in these Sections. The specified noise limits (80 dB(A) (decibels) for all new cars, pickup trucks, vans and motorcycles apply only to new motor vehicles, under full throttle acceleration tests, measured 50 feet from the test vehicle, as specified in Sections 1040-1044, 1046 and 1047, Title 13, California Code of Regulations (13 CCR).
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und weiter:
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Sections 1030-1036, 13 CCR, were intended to be used by Licensed Muffler Certification Stations as a means of determinining if an exhaust system met the requirements of the Muffler Certification Program (when those programs were operational). They specify testing procedures for motor vehicle exhaust noise alone (as opposed to total vehicle noise). This procedure specifies a limit of 95 dB(A) measured 20 inches from the exhaust pipe outlet with the engine operating in neutral, typically at a speed of 3000-5000 rpm.
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das war jetzt kalifornien. dann habe ich aber noch was gefunden:
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625 ILCS 5/12-602. Mufflers, prevention of noise. Every motor vehicle driven or operated upon the highways of this State shall at all times be equipped with an adequate muffler or exhaust system in constant operation and properly maintained to prevent any excessive or unusual noise. No such muffler or exhaust system shall be equipped with a cutout, bypass or similar device. No person shall modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise of such vehicle above that emitted by the muffler originally installed on the vehicle, and such original muffler shall comply with all the requirements of this Section.
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das war illinois...
also: niemand darf den auspuff modifizieren, so dass er lauter als der serien-auspuff wird.
also dürfen auch aftermarket-anlagen nicht lauter als serie sein, wenn man danach geht.
halte ich für interessant.
ich glaube ich bestell mir auf gut glück eine tanabe und versuch die mal einzutragen, wenn die auspuff-geschichte fällig ist.
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