Ok, so I am planning on making (or at least modifying the hell out of) my own exhaust system) (With Stunnah's help and advice (thanks Stunnah))
During my research I came across this, found it interesting.
California Vehicle code noise levels for motorcycle exhaust systems muah ha ha.
here ya all go
Here are some portions of the California Vehicle Code relating to Motorcycle Exhaust Systems:
* How loud can my bike be?
* At what distance?
* How loud can it be in a residential area?
* When they ticket you, print out the measuring restrictions when you take them to court!
* It is illegal for anyone to install or sell a muffler that does not comply with California Law
* It is also illegal for someone to sell any part of a motorcycle exhaust system that doesn't comply with the law
* It is illegal to modify your motorcycle's exhaust system in order to exceed the noise limits in section 23130
*
23130. (a) No person shall operate either a motor vehicle or
combination of vehicles of a type subject to registration at any time
or under any condition of grade, load, acceleration, or deceleration
in such a manner as to exceed the following noise limit for the
category of motor vehicle within the speed limits specified in this
section:
Speed limit Speed limit
of 35 mph of more than
or less 35 mph
(1) Any motor vehicle with a
manufacturer's gross vehicle
weight rating of more than
10,000 pounds and any
combination of vehicles towed
by such motor vehicle ........... 86 dbA 90 dbA
Speed limit Speed limit
of 45 mph of more than
or less 45 mph
(2) Any motorcycle other than a
motor-driven cycle .............. 82 dbA 86 dbA
(3) Any other motor vehicle and
any combination of vehicles
towed by such motor vehicle ..... 76 dbA 82 dbA
(b) The noise limits established by this section shall be based on
a distance of 50 feet from the center of the lane of travel within
the speed limit specified in this section. The Department of the
California Highway Patrol may provide for measuring at distances
other than 50 feet from the center of the lane of travel. In such a
case, the measurement shall be corrected so as to provide for
measurements equivalent to the noise limit established by this
section measured at 50 feet.
© The department shall adopt regulations establishing the test
procedures and instrumentation to be utilized. These procedures
shall allow, to the extent feasible, noise measurement and
enforcement action to be accomplished in reasonably confined areas
such as residential areas of urban cities.
(d) This section applies to the total noise from a vehicle or
combination of vehicles and shall not be construed as limiting or
precluding the enforcement of any other provisions of this code
relating to motor vehicle exhaust noise.
(e) For the purpose of this section, a motortruck, truck tractor,
or bus that is not equipped with an identification plate or marking
bearing the manufacturer's name and manufacturer's gross vehicle
weight rating shall be considered as having a manufacturer's gross
vehicle weight rating of more than 10,000 pounds if the unladen
weight is more than 5,000 pounds.
(f) No person shall have a cause of action relating to the
provisions of this section against a manufacturer of a vehicle or a
component part thereof on a theory based upon breach of express or
implied warranty unless it is alleged and proved that such
manufacturer did not comply with noise limit standards of the Vehicle
Code applicable to manufacturers and in effect at the time such
vehicle or component part was first sold for purposes other than
resale.
23130.5. (a) Notwithstanding the provisions of subdivision (a) of
Section 23130, the noise limits, within a speed zone of 35 miles per
hour or less on level streets, or streets with a grade not exceeding
plus or minus 1 percent, for the following categories of motor
vehicles, or combinations of vehicles, which are subject to
registration, shall be:
(1) Any motor vehicle with a manufacturer's gross
vehicle weight rating of 6,000 pounds or more and
any combination of vehicles towed by such motor
vehicle ........................................... 82 dbA
(2) Any motorcycle other than a motor-driven cycle .... 77 dbA
(3) Any other motor vehicle and any combination of
vehicles towed by such motor vehicle .............. 74 dbA
No person shall operate such a motor vehicle or combination of
vehicles in such a manner as to exceed the noise limits specified in
this section.
The provisions of subdivisions ©, (d), (e), and (f) of Section
23130 shall apply to this section.
(b) Measurements shall not be made within 200 feet of any
intersection controlled by an official traffic control device, or
within 200 feet of the beginning or end of any grade in excess of
plus or minus 1 percent. Measurements shall be made when it is
reasonable to assume that the vehicle flow is at a constant rate of
speed, and measurement shall not be made under congested traffic
conditions which require noticeable acceleration or deceleration.
© Test procedures and instrumentation to be utilized shall be in
accordance with regulations of the Department of the California
Highway Patrol, except that measurement shall not be conducted within
200 feet of any intersection controlled by an official traffic
control device, or within 200 feet of the beginning or end of a
grade.
(d) The noise limits established by this section shall be based on
a distance of 50 feet from the center of the lane of travel within
the speed limit specified in this section. The Department of the
California Highway Patrol may provide for measuring at distances
closer than 50 feet from the center of the lane of travel. In such a
case, the measuring devices shall be so calibrated as to provide for
measurements equivalent to the noise limit established by this
section measured at 50 feet.
Vehicles equipped with at least two snowtread tires are exempt
from this section.
23135. It is unlawful for any person to operate upon a highway any
vehicle which was originally manufactured as a motorized bicycle, as
defined in Section 406, and which has been modified in such a manner
that it no longer conforms to the definition of a motorized bicycle.
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.
(b) Except as provided in Division 16.5 (commencing with Section
38000) with respect to off-highway motor vehicles subject to
identification, every passenger vehicle operated off the highways
shall at all times be equipped with an adequate muffler in constant
operation and properly maintained so as to meet the requirements of
Article 2.5 (commencing with Section 27200), and no muffler or
exhaust system shall be equipped with a cutout, bypass, or similar
device.
© The provisions of subdivision (b) shall not be applicable to
passenger vehicles being operated off the highways in an organized
racing or competitive event conducted under the auspices of a
recognized sanctioning body or by permit issued by the local
governmental authority having jurisdiction.
27150.1. On and after the effective date of regulations and
standards adopted by the commissioner pursuant to Section 27150.2, no
person engaged in a business which involves the selling of motor
vehicle exhaust systems, or parts thereof, including, but not limited
to, mufflers, shall offer for sale, sell, or install, a motor
vehicle exhaust system, or part thereof, including, but not limited
to, a muffler, unless it meets such regulations and standards.
A violation of this section shall constitute a misdemeanor.
27150.2. The commissioner shall, after the study required by
Section 27150.3, and after public hearings, adopt regulations setting
standards for the certification of vehicular exhaust systems based
solely upon noise standards consistent with the total vehicle noise
levels set by Sections 23130 and 23130.5. Such regulations shall
include, but need not be limited to:
(a) Provisions for standards for vehicular exhaust systems, based
on manufacturers' data and subject to such inspections and other
verification as the commissioner may prescribe.
(b) Provisions for the licensing of stations to implement the
provisions of this section, and Section 27150.1, and for the denial,
revocation, or suspension of any license for failure to comply with
the provisions of this section or any regulation adopted thereunder.
The regulations may provide for the exemption of vehicular exhaust
systems where compliance with the regulations would cause an
unreasonable hardship without resulting in a sufficient corresponding
benefit with respect to noise level control.
The regulations adopted pursuant to this section shall become
effective one year after the regulations are filed with the
Legislature pursuant to Section 27150.4.
27150.3. The commissioner shall conduct a study to determine the
best means of implementing the requirements of Section 27150.1. The
results of such study shall be filed with the Legislature and made
available to the public as soon as practicable but not later than
January 5, 1973.
27150.4. The commissioner shall file the regulations adopted
pursuant to Section 27150.2 with both houses of the Legislature not
later than six months after the study is filed as specified in
Section 27150.3.
27150.5. Any person holding a retail seller's permit who sells or
installs an exhaust system, or part thereof, including, but not
limited to, a muffler, in violation of Section 27150.1 or 27150.2 or
the regulations adopted pursuant thereto, shall thereafter be
required to install an exhaust system, or part thereof, including,
but not limited to, a muffler, which is in compliance with such
regulations upon demand of the purchaser or registered owner of the
vehicle concerned, or to reimburse the purchaser or registered owner
for the expense of replacement and installation of an exhaust system,
or part thereof, including, but not limited to, a muffler, which is
in compliance, at the election of such purchaser or registered owner.
27150.6. The department shall make every effort to obtain federal
assistance to carry out the provisions of Sections 27150.1, 27150.2,
27150.3, 27150.4, and 27150.5.
27150.7. A court may dismiss any action in which a person is
prosecuted for operating a vehicle in violation of Sections 23130 or
23130.5 if it is found that the vehicle was equipped with an exhaust
system certified pursuant to Section 27150.2 and that the defendant
had reasonable grounds to believe that the exhaust system was in good
working order and had reasonable grounds to believe that the vehicle
was not operated in violation of Sections 23130 or 23130.5.
27150.8. The manufacturers of motorcycles and motorcycle
accessories shall, prior to the sale or offering for sale of any
motorcycle exhaust system or part thereof, including, but not limited
to, a muffler, certify to the department that the exhaust system or
part thereof is in compliance with the standards and regulations
adopted by the commissioner which are applicable to such exhaust
systems or parts thereof and which are in effect at the time of the
first offering for sale at retail. The content and form of the
certification shall be in accordance with procedures adopted by the
commissioner.
27151. 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 such 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) of this chapter. No person shall operate a motor
vehicle with an exhaust system so modified.
During my research I came across this, found it interesting.
California Vehicle code noise levels for motorcycle exhaust systems muah ha ha.
here ya all go
Here are some portions of the California Vehicle Code relating to Motorcycle Exhaust Systems:
* How loud can my bike be?
* At what distance?
* How loud can it be in a residential area?
* When they ticket you, print out the measuring restrictions when you take them to court!
* It is illegal for anyone to install or sell a muffler that does not comply with California Law
* It is also illegal for someone to sell any part of a motorcycle exhaust system that doesn't comply with the law
* It is illegal to modify your motorcycle's exhaust system in order to exceed the noise limits in section 23130
*
23130. (a) No person shall operate either a motor vehicle or
combination of vehicles of a type subject to registration at any time
or under any condition of grade, load, acceleration, or deceleration
in such a manner as to exceed the following noise limit for the
category of motor vehicle within the speed limits specified in this
section:
Speed limit Speed limit
of 35 mph of more than
or less 35 mph
(1) Any motor vehicle with a
manufacturer's gross vehicle
weight rating of more than
10,000 pounds and any
combination of vehicles towed
by such motor vehicle ........... 86 dbA 90 dbA
Speed limit Speed limit
of 45 mph of more than
or less 45 mph
(2) Any motorcycle other than a
motor-driven cycle .............. 82 dbA 86 dbA
(3) Any other motor vehicle and
any combination of vehicles
towed by such motor vehicle ..... 76 dbA 82 dbA
(b) The noise limits established by this section shall be based on
a distance of 50 feet from the center of the lane of travel within
the speed limit specified in this section. The Department of the
California Highway Patrol may provide for measuring at distances
other than 50 feet from the center of the lane of travel. In such a
case, the measurement shall be corrected so as to provide for
measurements equivalent to the noise limit established by this
section measured at 50 feet.
© The department shall adopt regulations establishing the test
procedures and instrumentation to be utilized. These procedures
shall allow, to the extent feasible, noise measurement and
enforcement action to be accomplished in reasonably confined areas
such as residential areas of urban cities.
(d) This section applies to the total noise from a vehicle or
combination of vehicles and shall not be construed as limiting or
precluding the enforcement of any other provisions of this code
relating to motor vehicle exhaust noise.
(e) For the purpose of this section, a motortruck, truck tractor,
or bus that is not equipped with an identification plate or marking
bearing the manufacturer's name and manufacturer's gross vehicle
weight rating shall be considered as having a manufacturer's gross
vehicle weight rating of more than 10,000 pounds if the unladen
weight is more than 5,000 pounds.
(f) No person shall have a cause of action relating to the
provisions of this section against a manufacturer of a vehicle or a
component part thereof on a theory based upon breach of express or
implied warranty unless it is alleged and proved that such
manufacturer did not comply with noise limit standards of the Vehicle
Code applicable to manufacturers and in effect at the time such
vehicle or component part was first sold for purposes other than
resale.
23130.5. (a) Notwithstanding the provisions of subdivision (a) of
Section 23130, the noise limits, within a speed zone of 35 miles per
hour or less on level streets, or streets with a grade not exceeding
plus or minus 1 percent, for the following categories of motor
vehicles, or combinations of vehicles, which are subject to
registration, shall be:
(1) Any motor vehicle with a manufacturer's gross
vehicle weight rating of 6,000 pounds or more and
any combination of vehicles towed by such motor
vehicle ........................................... 82 dbA
(2) Any motorcycle other than a motor-driven cycle .... 77 dbA
(3) Any other motor vehicle and any combination of
vehicles towed by such motor vehicle .............. 74 dbA
No person shall operate such a motor vehicle or combination of
vehicles in such a manner as to exceed the noise limits specified in
this section.
The provisions of subdivisions ©, (d), (e), and (f) of Section
23130 shall apply to this section.
(b) Measurements shall not be made within 200 feet of any
intersection controlled by an official traffic control device, or
within 200 feet of the beginning or end of any grade in excess of
plus or minus 1 percent. Measurements shall be made when it is
reasonable to assume that the vehicle flow is at a constant rate of
speed, and measurement shall not be made under congested traffic
conditions which require noticeable acceleration or deceleration.
© Test procedures and instrumentation to be utilized shall be in
accordance with regulations of the Department of the California
Highway Patrol, except that measurement shall not be conducted within
200 feet of any intersection controlled by an official traffic
control device, or within 200 feet of the beginning or end of a
grade.
(d) The noise limits established by this section shall be based on
a distance of 50 feet from the center of the lane of travel within
the speed limit specified in this section. The Department of the
California Highway Patrol may provide for measuring at distances
closer than 50 feet from the center of the lane of travel. In such a
case, the measuring devices shall be so calibrated as to provide for
measurements equivalent to the noise limit established by this
section measured at 50 feet.
Vehicles equipped with at least two snowtread tires are exempt
from this section.
23135. It is unlawful for any person to operate upon a highway any
vehicle which was originally manufactured as a motorized bicycle, as
defined in Section 406, and which has been modified in such a manner
that it no longer conforms to the definition of a motorized bicycle.
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.
(b) Except as provided in Division 16.5 (commencing with Section
38000) with respect to off-highway motor vehicles subject to
identification, every passenger vehicle operated off the highways
shall at all times be equipped with an adequate muffler in constant
operation and properly maintained so as to meet the requirements of
Article 2.5 (commencing with Section 27200), and no muffler or
exhaust system shall be equipped with a cutout, bypass, or similar
device.
© The provisions of subdivision (b) shall not be applicable to
passenger vehicles being operated off the highways in an organized
racing or competitive event conducted under the auspices of a
recognized sanctioning body or by permit issued by the local
governmental authority having jurisdiction.
27150.1. On and after the effective date of regulations and
standards adopted by the commissioner pursuant to Section 27150.2, no
person engaged in a business which involves the selling of motor
vehicle exhaust systems, or parts thereof, including, but not limited
to, mufflers, shall offer for sale, sell, or install, a motor
vehicle exhaust system, or part thereof, including, but not limited
to, a muffler, unless it meets such regulations and standards.
A violation of this section shall constitute a misdemeanor.
27150.2. The commissioner shall, after the study required by
Section 27150.3, and after public hearings, adopt regulations setting
standards for the certification of vehicular exhaust systems based
solely upon noise standards consistent with the total vehicle noise
levels set by Sections 23130 and 23130.5. Such regulations shall
include, but need not be limited to:
(a) Provisions for standards for vehicular exhaust systems, based
on manufacturers' data and subject to such inspections and other
verification as the commissioner may prescribe.
(b) Provisions for the licensing of stations to implement the
provisions of this section, and Section 27150.1, and for the denial,
revocation, or suspension of any license for failure to comply with
the provisions of this section or any regulation adopted thereunder.
The regulations may provide for the exemption of vehicular exhaust
systems where compliance with the regulations would cause an
unreasonable hardship without resulting in a sufficient corresponding
benefit with respect to noise level control.
The regulations adopted pursuant to this section shall become
effective one year after the regulations are filed with the
Legislature pursuant to Section 27150.4.
27150.3. The commissioner shall conduct a study to determine the
best means of implementing the requirements of Section 27150.1. The
results of such study shall be filed with the Legislature and made
available to the public as soon as practicable but not later than
January 5, 1973.
27150.4. The commissioner shall file the regulations adopted
pursuant to Section 27150.2 with both houses of the Legislature not
later than six months after the study is filed as specified in
Section 27150.3.
27150.5. Any person holding a retail seller's permit who sells or
installs an exhaust system, or part thereof, including, but not
limited to, a muffler, in violation of Section 27150.1 or 27150.2 or
the regulations adopted pursuant thereto, shall thereafter be
required to install an exhaust system, or part thereof, including,
but not limited to, a muffler, which is in compliance with such
regulations upon demand of the purchaser or registered owner of the
vehicle concerned, or to reimburse the purchaser or registered owner
for the expense of replacement and installation of an exhaust system,
or part thereof, including, but not limited to, a muffler, which is
in compliance, at the election of such purchaser or registered owner.
27150.6. The department shall make every effort to obtain federal
assistance to carry out the provisions of Sections 27150.1, 27150.2,
27150.3, 27150.4, and 27150.5.
27150.7. A court may dismiss any action in which a person is
prosecuted for operating a vehicle in violation of Sections 23130 or
23130.5 if it is found that the vehicle was equipped with an exhaust
system certified pursuant to Section 27150.2 and that the defendant
had reasonable grounds to believe that the exhaust system was in good
working order and had reasonable grounds to believe that the vehicle
was not operated in violation of Sections 23130 or 23130.5.
27150.8. The manufacturers of motorcycles and motorcycle
accessories shall, prior to the sale or offering for sale of any
motorcycle exhaust system or part thereof, including, but not limited
to, a muffler, certify to the department that the exhaust system or
part thereof is in compliance with the standards and regulations
adopted by the commissioner which are applicable to such exhaust
systems or parts thereof and which are in effect at the time of the
first offering for sale at retail. The content and form of the
certification shall be in accordance with procedures adopted by the
commissioner.
27151. 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 such 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) of this chapter. No person shall operate a motor
vehicle with an exhaust system so modified.
