Are Exhaust Cutouts Legal? Everything You Need To Know About It!

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are exhaust cutouts legal

In the upper echelons of automobile engineering, anything on a car that doesn’t serve a purpose is often deemed to be foolish-looking or sounding. Are exhaust cutouts legal? Every vehicle must have a functioning exhaust cutout.

Motorists are also prohibited from using any equipment to take off or bypass the exhaust cutout on a highway vehicle. In this article, we will discuss all the existed laws of it in the different states of the USA.

What Is A Exhaust Cutout?

When you have to drive to the track discreetly, exhaust cutouts are the ideal exhaust product to employ. Simple to install, manual exhaust cutouts allow you to open your exhaust by unbolting the covers below your car. You can open your exhaust with a flick of a switch if you have an electric cutoff.

Is exhaust cuts may boost horsepower? Unfortunately, most standard exhaust systems won’t work with aftermarket exhaust or exhaust cutouts. Instead, make sure your tires can handle the increased thrust.

In today’s high-tech automobile sector, loud and obnoxious cars are regarded as old-fashioned and foolish. However, exhaust cutouts’ regulations vary from state to state within the United States. I’ve included a few of my favorites below.


“Mufflers; Noise and Air Pollution Prevention; Emissions Control Devices; Civil Penalties; Exception”

a. A vehicle’s muffler must always be in good functioning order and running continuously to avoid making excessive or unexpected noise.

b. A person may not utilize a muffler cutout, bypass, or similar device on a roadway.

c. Excessive fumes or smoke from a motor vehicle’s engine and power system must be contained and prevented.

(d) Motor vehicles and engines manufactured before 1968 must have emission control devices that meet the standards specified by the director of environmental quality.

The offender faces a $100 civil penalty if this clause is violated. Section (f) does not apply to a vehicle driven only by electricity.

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§ 32-5-216.

(a) A functioning and constantly working exhaust system is required for all motor vehicles to avoid excessive noise and annoying fumes. If you’re driving down the road, you can’t have any of these things installed in your exhaust system.

(b) All engines and powertrains in automobiles must be appropriately fitted and regulated to prevent the production of excessive amounts of exhaust gases or smoke.

33-5-23 specifically

(a) For a vessel’s internal combustion engines to remain quiet, they must be silenced using equipment developed and used for this purpose. There is no exception to this rule, even if the ship participates in a regatta or an official boat race, even during trial runs.

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 § 27150. Adequate muffler required

Any exhaust system or muffler that is subject to registration must include a cutoff, bypass, or similar mechanism that prevents excessive or unusual noise from coming from the exhaust in operation at all times.

§ 27151. Exhaust system modifications

(a) It is unlawful to alter a vehicle’s exhaust system in such a way that the vehicle’s noise emissions violate Section 27150 or exceed the noise restrictions specified for the vehicle’s type in Article 2.5, nor should anyone attempt to do so (commencing with Section 27200).


§ 316.272. Noise reduction via exhaust systems

(a) To prevent excessive or unusual noise, every vehicle must have an exhaust system in excellent functioning condition and continual operation, including the muffler, manifold pipe, and tailpipes.

(b) Excessive fumes or smoke should not escape from any motor vehicle’s engine or power mechanism.

(c) Noncriminal traffic infractions are penalized as a nonmoving offense under Chapter 318 if this section is violated.


It’s at 32:352. Adhering to muffler requirements can avoid excessive noise, fumes, and smoke.

(A) Every automobile must always have a working muffler to prevent making an unusual or excessive amount of noise.

(B) A muffler bypass or equivalent device is prohibited on state highways.

(C) Every automobile’s engine and powertrain must be configured and set up so exhaust gases or smoke cannot escape.

§ 32:353. Exhaust system modifications

People are not allowed to alter the exhaust system of an automobile to raise or magnify its motor’s noise over what the vehicle’s original muffler was capable of producing, as required by R.S. 32:352.


§ 257.707b. Requirements for the exhaust system.

(a) It is the driver’s responsibility to make sure that the vehicle’s exhaust system is operated on a public highway or street is in proper operating condition to avoid excessive or unusual noise from being made.

(b) Special mobile equipment is not considered part of a motor vehicle for sections 707a to 707f.

New Mexico

A muffler is a device used to reduce or eliminate noise and regulate emissions.

a. The muffler on every vehicle must be in excellent working condition and must be continuously operated to avoid excessive or unusual noise; no one may use a muffler cutout, bypass, or similar device on a highway-bound vehicle.

b. All vehicles must be equipped with mufflers, emission control systems, engines, and power mechanisms that are adequately trained and regulated to prevent excessive fumes or smoke.

C. For every registered gasoline-powered motor vehicle made or assembled starting in 1968 models, the factory-installed devices and equipment or their substitutes must be in excellent functioning condition and adequately maintained.

New York City

Vehicle and Traffic Law 375.

(a) Number 31: exhaust systems and mufflers The idea is to reduce the amount of noise in the room. Any vehicle operated or driven on the state’s roads must have a sound exhaust system to do so.

(b) Mufflers, chambers, baffles, and other mechanical components, gather exhaust gases from internal combustion engines.

(c) Internal combustion engines produce exhaust gas collected and released by an exhaust system.

Motor vehicle noise regulations (section 386)

The A-weighted sound level that exceeds the legal limit for any vehicle or combination of vehicles under 10,000 pounds must be avoided at all times on a public roadway if the weight of the cars is less than 10,000 pounds. Motorcycles are included in this.


Following Section 547.604.

a. To avoid making abnormal noise, a vehicle must have adequate working mufflers running continually.

b. Using a muffler cutout, bypass, or similar device in a vehicle’s exhaust system is completely forbidden.


§ 2812 Alteration Of Motor Vehicle Exhaust System

a. This section prohibits anybody from modifying or altering the exhaust system of a motor vehicle or motorbike in a way that would raise or amplify the vehicle’s noise.

b. If the vehicle’s exhaust system has been modified to increase the volume of noise it makes, it is illegal to drive or ride a motorbike with such an exhaust system.

The Ending Story

Therefore, the answer to the question “Are exhaust cutouts legal?” Yes, but according to federal and state regulations, every vehicle registered in the United States must have a sound exhaust system.

 They need ongoing functioning to avoid excessive or unusual noise and prevent a muffler from providing a cut-out, bypass, or equivalent mechanism.

Dylan Miller

I am a Chicago native and regular contributor to "Locar Deals". I have a master's degree in English, am an automobile content creation specialist, and have written professionally for a variety of automotive companies over the past few years. I write on a variety of vehicles, from high-end luxury cars to ten-year-old gas guzzlers and everything in between. And I love sharing valuable car buying tips with consumers from all walks of life.

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