JPJ exhaust decibel limit

If you are unsure of a system passing a local decibel limit law, please have a profession test out your exhaust to determine if its legal. Where To Place Decibel Meter. What we decided on was a placing the decibel meter in specific locations for each car, then holding and revving the RPM's up to specific points and recording the decibel reading BUT ur exhaust must not exceed a certain decibel limit...forgot wat it was already..go jpj website and search ive had friends whos gone to JPJ inspections with modded exhaust... one of them even went there to legalize his exhaust mod. so they did the inspection on his exhaust.. and it was legal and below that specified decibel limit The proposed LTO-MIVS decibel limit. As stated in Section of the MVIS, a motor vehicle's exhaust or muffler should not exceed 99 decibels at an engine speed of 2,000 to 2,500 rpm. If a particular vehicle fails the sound test, the LTO will confiscate its front plate. The owner will then receive the MVIS report after the said test

How Much Louder Is Our Exhaust than the Factory Exhaust

(WTA) Exhaust Modification on car

• A relative contribution of tire rolling noise is increasing in comparison to the power unit noise. • In order to keep noise levels of in-use vehicle at the same level as new ones, it is effective to regulate noise levels of replacement tire and replacement exhaust silencer system (RESS) jpj just set some db limit. PT. kamon la..no need too much hassle with ambient noise bla bla bla etc etc. make it simple for rakyat faham. and PT pls stop backing those noise polluter. lu nak. The loud noise of car, truck and motorcycle mufflers has prompted legislation in many areas that limits the number of decibels allowed by vehicle exhaust. In such localities, police are enforcing noise reduction by measuring exhaust decibels or sending suspected offenders to testing sites for exhaust noise evaluation State Noise and Exhaust Regulations State Equipment and Road Use Law Summaries Usual criteria for in-use sound measurement is a distance of 50' from the center of the lane of travel within the speed limit. dbA means decibels measured with a calibrated sound level meter weighted to the A scale

LTO exhaust decibel limit - Everything you need to kno

1. At a 45-degree angle to the exhaust centerline (the normal line of travel) 2. Parallel to the ground 3. 20 inches (0.5 meter) to the rear of the exhaust outlet 4. At the same height as the exhaust outlet Determine the test RPM for the make, model, and year of vehicle from the tables in this manual I hope you guys enjoyed this quick experiment. this by any means it's NOT a official test. You will have to go somewhere local to get this checked and certif..

JPJ guidelines - Modification of personal vehicles

California Vehicle Exhaust Noise Laws (2021

According to that, under 35 mph, your exhaust can't exceed 88 Db, and above 35mph your exhaust cant exceed 92Db. The testing procedure is as follows: (b) Measurement distance. The noise limits established by this section shall be based on a distance of 50 feet from the center lane of travel within the speed limit specified in this section. The wording of this regulation covers things like revving the engine, wheel spins and custom exhausts purposely installed to make noise. How do police decide an excessive noise ticket? The MVAR sets maximum sound pressure limits for different classes of vehicle. It is up to an inspector to decide whether exhaust gases are expelled with. The shop in most cases will simply put it at one corner and hope you forget to take it. The bullet on the left is the midbox from Everco, where else the one on the right is a bullet from the previous exhaust shop. The size difference contributes greatly to the sound. 1 Everco midbox can suppress more noise than 2 China brand bullet type muffler If you install aftermarket exhaust modifications make sure it does not produce excessive noise. Texas laws do not specify noise limit in decibels, therefore the law is open to interpretation. Exhaust noise is not checked during vehicle exhaust inspections. Sources and more info: Texas Transportation Code § 547.604(a). I got stickered for my apes and exhaust on Friday night. I took bike over pits today and failed as apes too high, ( 16's). Long shots measured 94 Db. Does anyone know what the limit is, as I wasn't told. Either pull baffles and repack or put on the stock ones for revisit

Exhaust Noise dB limit Club GT

Legal decibel limit for exhausts? - Automotiv

F.S. 316.293. 316.293 Motor vehicle noise.—. (1) DEFINITIONS. — The following words and phrases, when used in this section, shall have the meanings respectively assigned to them in this subsection, except where the context otherwise requires: (a) dB A means the composite abbreviation for the A-weighted sound level and the unit of. At 50 feet and about 5-6 feet in the air as my friend was holding it, the car under full throttle was anywhere from 97-97.5db. The Tomei silencer lessened the db reading less than 2db. According to the SCCA rules if you exceed 100db you'll need to fix the issue prior to your next run. If you exceed 97db sound must notify the sound control steward To reduce unwanted noise from vehicle exhaust systems, many states and municipalities have noise regulations that specify certain decibel limits for motor vehicles. In Ohio, the noise limit for passenger cars traveling at speeds of less than 35 mph is 70 dB. For speeds higher than 35 mph, the noise limit is 79 dB Since 2003, exhaust systems installed on motor vehicles with a manufacturer's gross vehicle weight rating of less than 6,000 pounds, other than motorcycles, may not exceed a sound level of 95-decibels when tested under Society of Automotive Engineers (SAE) test procedure J1492 (formerly J1169) Instead, every vehicle owner or exhaust system installer must know their local laws. In some states, such as California, the maximum sound level limit for vehicle exhausts is 95 decibels when measured next to the vehicle. In Kansas, state muffler laws require vehicle exhaust noise to be less than 90 decibels when measured from 50 feet away

Illinois Vehicle Exhaust Noise Law

What are the motorcycle exhaust noise limits in each state? Noise standards (for motorcycles or cars) vary from state to state. Below is a list of these standards, by state. This list is for informational purposes, and you should note that these laws change from time to time, so it' 82-86 decibels is the current maximum permitted noise level for a motorcycle, the bracket depending on engine size. Most police forces use 90 decibels as the limit to take account for the effects.

Safe and Sound: Gear to Protect Your Ears

noise.aspx. When the prescribed noise limits are exceeded, EPA authorised officers can issue penalty notices for offences. There is a tiered scale for fines - the louder the exhaust noise from vehicles, the greater the penalty (see Table 1). You can ensure that the exhaust noise from your vehicle is acceptable by regularly maintaining your. Getting right into it, the new mandated sound limit for all vehicles—be it cars or motorcycles—is 99 decibels. The guidelines make it clear that the sound is to be measured at exactly 0.5 meters away from the tip of the exhaust pipe, with the sound level meter at a 45-degree angle with respect to the vehicle's exhaust pipe

California Exhaust Noise Limit. Jump to Latest Follow 1 - 20 of 36 Posts. 1; 2; Next. 1 of 2 Go to page. Go. Last. ONEZ ST · Super Moderator. Joined Jun 16, 2006 · 8,181 Posts . Discussion Starter · #1 · 4 mo ago. The exhaust noise of vehicles manufactured after 1967 may exceed 95 dB(A) if the replacement parts are no louder than the original equipment or factory duplicate system and the total sound level of the vehicle when tested in accordance with Sections 1040 through 1049 of this title complies with the limits in Vehicle Code Section 27205 for.

The legal limit for exhaust noise from motorcycles is 92 decibels. That sounds about the same as a lawnmower or a chainsaw. Cars have a slightly lower noise limit at 84 decibels The current legal noise limit for car meeting type approval is 74 decibels, and it is it is illegal to modify a car's exhaust system to make it noisier than the level at which it passed type. First track day - 92dB noise limit VS stock exhaust? Jump to Latest Follow 1 - 9 of 9 Posts. Barroux They warned me their dB limit was 92dB and that they would perform their own test before we go on track (no details about the test were provided, suspecting a static test at a given rpm, test equipment at some distance from the car)

Exhaust noise limit! - Page 1 - Speed, Plod & the Law

Limit values for eight types of passenger and goods vehicles range from 74 dB(A) to 80 dB(A). It applies a system of optional harmonisation to the approval of motor vehicles and exhaust system. The Member States may not refuse to grant EEC or national type-approval to vehicles which meet the requirements of the directive The legal noise limit for cars un Europe is 74 decibels and it is illegal to modify an exhaust to be louder than this. Police forces have suggested that noise exceeding 90 decibels is regarded as. Sound pressure is normally measured on a decibel (dB) scale. The dB scale is a logarithmic scale, therefore a 10 dB increase in sound is actually a ten- fold increase in sound pressure - i.e. 100 db is 10 times louder than 90 dB and 110 dB is 100 times louder than 90dB. Many race tracks have dB limits of around 100-110 dB SUMMARY OF PROVISIONS: Section one of this bill amends subdivisions 31 and 32 of Vehicle and Traffic Law § 375 to make it illegal to sell, offer for sale, or install a cut-out, bypass or similar device for the muffler or exhaust system of. a motor vehicle or motorcycle. The fine for a violation would be up to $1000 The Royal Malaysia Police (PDRM) has warned members of the public who cause noise pollution with their vehicles' exhaust pipes that they can be punished by law. Speaking to Sinar Harian, Bukit Aman Traffic Investigation and Enforcement Department (JSPT) chief Datuk Azisman Alias said offenders could face up to six months in jail or a fine of.

Help please! Need info on decibel ratings for stock exhaust

  1. I busted the sound limit last time out at 95+ db with OEM muffler. Apparently there is a simple way to connect the vacuum hose as nicely demonstrated by Joe. This in turn channel the exhaust through all 3 chambers on the main side mufflers hence reduce exhaust sound significantly enough to pass the 92 db sound limit
  2. Every motor vehicle or motor assisted bicycle shall be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and excessive smoke, and no person shall use a muffler cut-out, straight exhaust, gutted muffler, hollywood muffler, by-pass or similar device upon a motor vehicle or motor assisted.
  3. A muffler is a device consisting of a series of chambers or baffle plates, or other mechanical design for the purpose of receiving exhaust gas from an internal combustion engine, and effective in reducing noise. An exhaust system is a series of mechanical devices for the purpose of receiving exhaust gas from an internal combustion engine and.
  4. Find out why riders should challenge motorcycle exhaust noise infringements. Click here for more details: https://motorbikewriter.com/challenge-exhaust-noise..
  5. Noise cameras to be tested in UK in a bid to cut down on illegal exhausts. First published on June 8, 2019 by Ben Clarke. The Department for Transport has this morning announced that they will be.

(b) Tests shall be made on each side of the motorcycle having an exhaust outlet. (c) The sound level meter shall be located 0.5 ± 0.01 m(20 ± 0.5 in) behind the exhaust outlet; at a height within 0.01 m (0.5 in) of the height of the exhaust outlet; and at a 45 ± 10 deg angle to the normal line of travel of the motorcycle If tests reveal the vehicle exhaust noise levels exceed the legal limit, and the owner fails to rectify the exhaust noise level and present the vehicle for reinspection, the EPA may suspend the vehicle registration. More information about owning a noisy vehicle. Legislation and enforcement The law does specify that an exhaust system doesn't pass the test if it, permits the escape of noise in excess of that permitted by the standard factory equipment exhaust system. While Greenville doesn't list decibel limits for specific types of vehicles, they do limit daytime and nighttime decibels to: Daytime city wide: 60. A. GENERAL PROVISIONS 157.1 B. NOISE LIMITS 157.11 C. ADMINISTRATIVE PROVISIONS 157.21 D. INSTRUMENTATION 157.31 E. MEASUREMENT OF NOISE EMISSION HIGHWAY OPERATIONS 157.41 F. CORRECTION FACTORS 157.51 Authority. The provisions of this Chapter 157 issued under the Vehicle Code, 75 Pa.C.S. § § 4521 and 6103, unless otherwise noted Most units test for 40-to-70 dB, or 60-to-90 dB, or 80-to-110 dB, or 100-to-130 dB. Step 6 Hold the microphone of the meter toward the exhaust of your car, and with the engine idling, place the unit on the ground approximately 20 inches from the tail end of the exhaust pipe opening

Based on existing LTO regulations, motorcycles sporting exhaust pipes that emit a sound exceeding 115 decibels are subject to apprehension. LTO enforcers are directed to confiscate the license plates of violators, and since many two-wheelers have not been issued LTO plates yet, these motorcycles will likely end up in the impounding area 27200. (a) The Department of Motor Vehicles shall not register on a dealer's report of sale a new motor vehicle, except an off-highway motor vehicle subject to identification as provided in Division 16.5 (commencing with Section 38000), which produces a maximum noise exceeding the applicable noise limit at a distance of 50 feet from the centerline of travel under test procedures established. 1,903. 1,815. Michigan. Went to Mont Tremblant and the GT350R failed noise by over 3dB. Unlike some other tracks, they move the microphone location, and do not disclose where it is, so short shifting only worked on day 1 when I spotted mic location. The fix: Disconnect the exhaust valves (there's a connector on the valve pigtail each side), as.

JPJ road block. - Car Modification ! - Autoworld Foru

  1. Senator Takes Aim At Loud Vehicles. Loud car or motorcycle mufflers could net a loud fine if recently proposed legislation makes its way through the state Legislature. S.9009 is sponsored by Sen. Andrew Gounardes, D-Brooklyn, and would set a 95 decibel limit for motorcycle exhaust and mufflers or 60 decibles for car mufflers and exhaust systems
  2. Information about mufflers and noise. (3) This regulation shall not apply to motorboats competing, under a permit issued by the Marine Board pursuant to ORS 830.375 or a United States Coast Guard permit, in a regatta, a boat race, or while on official trials for speed records during the time and in a designated area authorized by the permit; and those boats testing in areas designated by the.
  3. See the Noise Limits Law - AB 2274 web page containing excerpts from AB 2274 relating to OHV noise regulations effective January 1, 2003. OHV Sound Cards For your convenience, Sound Cards are available by phone (916-324-4442) or mail (OHMVR Division, 1725 23rd Street, Suite 200, Sacramento, CA 95816)

Exhaust Modification Laws and Vehicle Sound Limits

(1) Under RCW 70.107.030(5) of the Noise Control Act of 1974 (chapter 183, Laws of 1974), the legislature directed the department of ecology, in exercising rule-making authority to give first priority to the adoption of motor vehicle noise performance standards. The purpose of this chapter is to carry out that legislative directive through the adoption of noise emission standards for new motor. Williams took some noise measurements of her own: So what were some local readings? One motorcycle with no muffler read 91 db on my sound meter. A loud car with glass packs read 98 db. A diesel pick-up with cut-out pipe through the bed was 99 db. A local dig rig with big exhaust stacks but no muffler was over 99 db

(2) The exhaust system of a vehicle may not be modified in a manner which will amplify or increase noise emitted by the motor of a vehicle above the maximum level permitted by Chapter 157 (relating to established sound levels). (3) Headers and side exhaust are permitted if the vehicle meets the requirements of this section There are some brands that actually have interchangeable baffles, such as Two Brothers. Their baffles drop the decibels by 2-3db, 5-6db or 7-8db. 5. Ensure your exhaust system is in good working order. Especially after a drop or crash, ensure there are no holes or issues with your exhaust system. 6 The maximum noise level permitted under these testing conditions will be 94 dBa which is the current limit set by the Off-Road Recreation Vehicles Act of Part 811 of 1994 PA 451 (MCL 324.811). All vehicles are required to have a muffler and spark arrester containing baffles meeting established United States Forest Service (USFS) specifications measurement of motor vehicle noise emissions. DoT has Authorised Noise Level Assessors to carry out noise level measurements of vehicles. The noise level measurements must be carried out in strict accordance with the National Transport Commission's 'National Stationary Exhaust Noise Test Procedures for In-Service Motor Vehicles', April 2000

Under the SAE J2825 standard, which the AMA has endorsed, decibel limits range from 92 dBA at idle for all motorcycles, to 100 dBA at certain RPMs for various motorcycles, depending on the type of engine. If a motorcycle meets these limits during the certified testing, then it is evidence that t he motorcycle doesn't violate the state's. Recent legislature from 2018 required police officers to dish out fines if they found cars' exhaust systems to breach the state-mandated 95-decibel limit, whereas now drivers will be allowed to.

Mufflers and Noise Level Limits. Vessel operators may not hear sound signals or voices if the engine is not adequately muffled. All vessels manufactured after January 1, 1990, operating on Maryland waters must be equipped with a muffler system in good working order and in constant operation to suppress engine noise The noise limit for the day is 105 db (A), which is measured at ½ metre from the exhaust outlet at ¾ maximum revs. It is the rider's responsibility to ensure that their machine is within this limit. All machines are sound tested prior to going out on the circuit

According to the JPJ, anyone found to have modified their vehicle illegally could be instantly summoned up to RM300. However, if the case goes to court, then the offending party can be fined a. Excessive vehicle noise, under current Arizona state law, is difficult to enforce, according to local law enforcement officials and a look by Sedona Red Rock News at current regulations.. Sedona city code sets relatively strict noise limits for any activity within city limits — 60 decibels for residential areas during the day, 50 dBA at night; and 65 dBA for commercially zoned districts

According to the recently passed California Assembly Bill 2274, effective January 1, 2003, All off-road vehicles must meet the static noise test limit of 96 decibels to legally use any and all. The noise made by the vehicle shall be measured by the two methods described in the Annex for the vehicle in motion and for the vehicle when stationary.[1] The values so obtained shall be entered in the test report for the vehicle. Sound level limits

Loud bike exhausts in Malaysia, what's the big noise

  1. operation to prevent exhaust and engine noise that exceeds the applicable noise level standards established under pars. (c) and (d). (c) For every snowmobile manufactured after July 1, 1972, and before July 2, 1975, the noise level standard for exhaust and engine noise shall be 90 decibels as measured i
  2. Unread post by: AlienPrime on Wed Feb 27, 2013 2:40 am. best i can find would be act 75. Muffler. 75. (1) Every motor vehicle or motor assisted bicycle shall be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and excessive smoke, and no person shall use a muffler cut-out, straight exhaust, gutted muffler, hollywood muffler, by-pass.
  3. Federal noise standards for replacement exhaust systems are expected to cause retail prices of current quiet systems (meeting California's 83 dB requirement) to rise to levels comparable to those predicted for stock re- placement systems for 80 dB motorcycles, or approximately 25 percent more than the average price of current original equipment.
  4. This is what the Minnesota State Statute 169.69 states: Every motor vehicle shall at all times be equipped with a muffler in good working order which blends the exhaust noise into the overall.
  5. exhaust noise limit is 90 decibels and for motorcycles, 94 decibels. The Department of Environment and Conservation (DEC) is currently considering how the implementation of the new Australian Design Rule 83/00, introducing new vehicle noise limits for vehicles manufactured on or after 1 January 2005, will affect NSW noise legislation. When.

All must work together to cancel that noise, says Wee. PETALING JAYA: The issue of motorcycle exhaust pipes being modified to create a loud noise should be looked into collectively by all relevant. European Noise Regulations Are Forcing Sports Car Makers to Resort to More Fake Engine Sounds. David Tracy. 7/30/19 1:25PM. 180. 1. There are certain cars that you just expect to be loud. AMG. Under Michigan law, the muffler on a snowmobile must be in good working order and, when in constant operation, noise emission cannot exceed 88 decibels at 13.1 feet, as measured using the 2004. (a) dB A means the composite abbreviation for the A-weighted sound level and the unit of sound level, the decibel. Terms Used In Florida Statutes 316.293 Person : means any individual, firm, company, agency, organization, partnership, corporation, association, trust, or other business entity of any kind whatsoever Wisconsin sound level limit for snowmobiles 1975, the noise level standard for exhaust and engine noise shall be 88 decibels. 350.095(1)(b) Cannot modify exhaust to make it louder than the originally manufactured machine, regardless of date of manufacture. Questions

How to Measure Exhaust Noise Legal Beagl

  1. (A) The board of county commissioners of any county, and the board of township trustees of any township subject to section 505.17 of the Revised Code, may regulate passenger car and motorcycle noise on streets and highways under their jurisdiction. Such regulations shall include maximum permissible noise limits measured in decibels, subject to the requirements of this section
  2. A Brisbane barrister who has written a paper on the legality of aftermarket motorcycle exhausts has urged all riders to challenge exhaust noise emissions fines, saying police will get the message and stop issuing them. Levente Jurth is representing riders caught in a recent blitz on motorcycle exhaust noise
  3. g from these modified exhaust systems, it is appropriate for 37 the MVC to advertise and re
  4. Track day tips: noise limits explained Find out the noise limits governing track days in the UK. by: A sound meter is positioned half a metre from the exhaust at a 45-degree angle, with the.
  5. (3) No person shall modify the exhaust system of a motor vehicle in a manner which will amplify or increase the noise emitted by the engine of such vehicle above that emitted by the muffler originally installed on the vehicle, and it shall be unlawful for any person to operate a motor vehicle not equipped as required by this subsection, or which has been amplified as prohibited by this subsection
  6. g into force. 1st August 1996. The Secretary of State for Transport,— (a) in exercise of the powers conferred by section 1 of the Motor Cycle Noise Act 1987,.
Voice Level at Distance

against a suitable noise limit. The system does not require the police to be in attendance but can be configured to provide real-time reports if required. A letter can be sent out requiring the registered owner to check, repair or replace their exhaust within a stated time period A muffler and exhaust system with no leaks will also ensure the driver does not violate state and local noise regulations. A general allowable noise level in most jurisdictions is 80 to 90 decibels. Individuals seeking to modify an exhaust system should consult applicable local noise ordinances before proceeding What's up guys. I'm going to start attending track days with Xcel soon and wanted to know what you guys are doing for your exhaust at tracks with DB limits? I currently have 2011 S1KRR with AR half system (slip-on w/o cat) and a DB Killer. My local track (Arizona Motorsports Park) has a 94 db limit, which I know I won't pass


  1. 257.707c Noise limitations; prohibitions. Sec. 707c. (1) After April 1, 1978, a motor vehicle shall not be operated or driven on a highway or street if the motor vehicle produces total noise exceeding 1 of the following limits at a distance of 50 feet except as provided in subdivisions (b) (iii) and (c) (iii): (a) A motor vehicle with a gross.
  2. OSHA sets legal limits on noise exposure in the workplace. These limits are based on the time a worker spends during a weighted average over an 8-hour day. With noise, OSHA's permissible exposure limit (PEL) is 90 dBA for all workers for an 8-hour day. The OSHA standard uses a 5-dBA exchange rate
  3. Installation of this exhaust system components on motorcycle models not specified may violate Federal law. (iii) The model specific code must be the same as used by the motorcycle manufacturer and described in § 205.158 (a) (6). (2) For exhaust systems designed solely for use on competition motorcycles (as defined by § 205.151 (a) (3) and so.

The J2825 Measurement of Exhaust Sound Pressure Levels of Stationary On-Highway Motorcycles, issued by the SAE in May, establishes instrumentation, test site, test conditions, procedures, measurements and sound level limits. According to the SAE, the J2825 standard is based on a comprehensive study of a wide variety of on-highway motorcycles The old limit of 80 dB(A) for motorcycles has disappeared with the adoption of the Commission Delegated Regulation (EU) No 134/2014 and is replaced by the standard from the UNECE Regulation 41, which is 77 dB(A). This looks like a huge reduction (an increase of 3 dB(A) means the sound pressure is doubled), but that doesn't need to be the case Smog Check Frequently Asked Questions General Information What is the Smog Check Program? The Smog Check Program is a vehicle inspection and maintenance program administered by the Bureau of Automotive Repair (BAR). The program is designed to improve air quality by identifying vehicles with excess emissions so they can be properly repaired or retired

April 7, 2020 ·. The motorcycle riding season has started in North Carolina and a lot of those motorcycles will be excessively loud because they are illegally equipped with exhaust systems not of the type installed at the time of manufacture in stark violation of the state muffler law GS 20-128 (a). The loud bikers call that illegal noise. Let's say we ignore the fart cans most find on Royal Enfields and smaller bikes with the muffler delete, the others which cost an arm or a kidney or so - Akras, Termis, Yoshi, etc. are designed specifically for track usage. Not road legal bits. Th.. The current decibel limit for exhaust noise for cars and light trucks is 95 decibels (dBA). The limit for motorcycles is as follows: Motorcycle having an engine capacity of 125 cm 3 or less: 96 dBA; Motorcycle having an engine capacity of more than 125 cm 3: 100 dBA; The following table lists the existing objective tail-pipe noise test decibel. Andrew P. Collins On Jan. 1, 2019, a new rule went into effect changing the way California cops can bust you for exhaust noise violations and the car community seems to be freaking out about it. The legislation in question is California Assembly Bill 1824, here's a rundown of what it really means. The shor What qualifies as excessively loud exhaust to the boys in blue? California Vehicle code 27151 states: (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. The exhaust noise output from a class LC, LD or LE vehicle is not less than or similar to the noise output the vehicle [or a vehicle of a similar type - see (Note 2)] would have had when it was manufactured with its original exhaust system, and: a) the increased noise output exceeds the relevant noise limit in Table 11-1-1 when assessed by.