How To Change The Exhaust Sound: Tips And Warnings

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The sound of a vehicle is primarily impacted by the engine and installed exhaust systems. Higher volume engines produce more exhaust, which typically deepens the sound and increases the audible volume. This time you will learn how to change exhaust sound.

How to change the exhaust sound?

Exhaust systems may be installed to dampen, amplify, irritate or soften the sound presence of the exhaust system. With a given engine, the style of exhaust and the specific components used can be modified to change the presence of sound.

Install a different muffler

The muffler contributes the most to the sound of the exhaust.. Mufflers that allow virtually all of the exhaust gases to be carried directly through them with very little obstruction or damping will produce some of the most audible exhaust presence.

Multi-chamber mufflers will allow the exhaust gases to be dampened within the chambers and some of the resonance to soften or minimize the sound produced (because each cylinder is fired separately, the sounds produced by the exhaust port of each cylinder can be used to balance or partially cancel the sound produced by another cylinder).

Longer and larger exhausts generally soften and deepen the sound the system produces. Mufflers that force exhaust gases through sound deadening chambers or restrict gases will reduce the sound produced (restriction forces sound waves to bounce off each other and reduces audible output)… Mufflers with coatings that specifically absorb sound waves also dampen sound output.

Install a resonator

When installed, a resonator allows more of the sound waves to bounce acoustically within the resonator chamber. This allows sound waves to bounce off the chamber walls and cancel other sound waves in the resonator.

The result is a damping effect from the presence of exhaust gases. If the resonator is used instead of a catalytic converter, the presence of sound may be increased. Because the catalytic converter acts as a damper for exhaust sound, removing the catalytic converter and replacing it with a resonator can result in a net increase in sound volume. Check the legality in your country before disassembling a catalytic converter.

Install a “straight” exhaust system

Exhaust chambers and tubes that allow gases to pass directly from the engine (or catalytic converter) to the exhaust tail without obstruction are considered straight-through designs.

Direct pass designs minimize obstruction to sound waves and result in an exhaust that is typically louder and responds directly to engine RPM (noticeable as a throating, growling or barking sound as a result of the exhaust gases produced for each cylinder that reaches the tailpipe virtually unobstructed).

Install an after-sales advice

Double-walled, beveled, and flared tips generally amplify the sound produced by the exhaust. Exhaust tips with outlets larger than the tailpipe inlet can amplify the sound.

Resonant exhaust tips are lined with fiberglass or sound deadening material and are specifically designed to reduce sound output from the exhaust system.

Install a cross pipe

If you have a dual exhaust system and both exhausts do not mix gases, you can significantly alter the sound by installing a cross pipe. The tube allows gases from one exhaust system to mix with exhaust gases from the other system.

Because the porting of the exhaust gases occurs at intermittent rates, the gas mixture will smooth out the overall flow and smooth out the overall sound. Crossover pipe, X-pipe, H-pipe, Y-pipe, and dual-entry muffler designs use the gas mixture to balance the exhaust outlet.

acoustic wrappers

Wrap the muffler and exhaust with acoustic wrap (or spray with a high-temp sound-deadening material). Acoustic wraps and sound deadening sprays designed for use in an exhaust system can reduce transferred vibrations and alter the overall sound of the exhaust system.

warnings

  • Removing the catalytic converter alters the vehicle’s exhaust gas emission.
  • Before removing the catalytic converter, first understand the laws and requirements of your vehicle by contacting your state’s Department of Motor Vehicles (DMV) or similar agency.

The sound of a vehicle is primarily impacted by the engine and installed exhaust systems. Higher volume engines produce more exhaust, which typically deepens the sound and increases the audible volume. This time you will learn how to change exhaust sound.

How to change the exhaust sound?

Exhaust systems may be installed to dampen, amplify, irritate or soften the sound presence of the exhaust system. With a given engine, the style of exhaust and the specific components used can be modified to change the presence of sound.

Install a different muffler

The muffler contributes the most to the sound of the exhaust.. Mufflers that allow virtually all of the exhaust gases to be carried directly through them with very little obstruction or damping will produce some of the most audible exhaust presence.

Multi-chamber mufflers will allow the exhaust gases to be dampened within the chambers and some of the resonance to soften or minimize the sound produced (because each cylinder is fired separately, the sounds produced by the exhaust port of each cylinder can be used to balance or partially cancel the sound produced by another cylinder).

Longer and larger exhausts generally soften and deepen the sound the system produces. Mufflers that force exhaust gases through sound deadening chambers or restrict gases will reduce the sound produced (restriction forces sound waves to bounce off each other and reduces audible output)… Mufflers with coatings that specifically absorb sound waves also dampen sound output.

Install a resonator

When installed, a resonator allows more of the sound waves to bounce acoustically within the resonator chamber. This allows sound waves to bounce off the chamber walls and cancel other sound waves in the resonator.

The result is a damping effect from the presence of exhaust gases. If the resonator is used instead of a catalytic converter, the presence of sound may be increased. Because the catalytic converter acts as a damper for exhaust sound, removing the catalytic converter and replacing it with a resonator can result in a net increase in sound volume. Check the legality in your country before disassembling a catalytic converter.

Install a “straight” exhaust system

Exhaust chambers and tubes that allow gases to pass directly from the engine (or catalytic converter) to the exhaust tail without obstruction are considered straight-through designs.

Direct pass designs minimize obstruction to sound waves and result in an exhaust that is typically louder and responds directly to engine RPM (noticeable as a throating, growling or barking sound as a result of the exhaust gases produced for each cylinder that reaches the tailpipe virtually unobstructed).

Install an after-sales advice

Double-walled, beveled, and flared tips generally amplify the sound produced by the exhaust. Exhaust tips with outlets larger than the tailpipe inlet can amplify the sound.

Resonant exhaust tips are lined with fiberglass or sound deadening material and are specifically designed to reduce sound output from the exhaust system.

Install a cross pipe

If you have a dual exhaust system and both exhausts do not mix gases, you can significantly alter the sound by installing a cross pipe. The tube allows gases from one exhaust system to mix with exhaust gases from the other system.

Because the porting of the exhaust gases occurs at intermittent rates, the gas mixture will smooth out the overall flow and smooth out the overall sound. Crossover pipe, X-pipe, H-pipe, Y-pipe, and dual-entry muffler designs use the gas mixture to balance the exhaust outlet.

acoustic wrappers

Wrap the muffler and exhaust with acoustic wrap (or spray with a high-temp sound-deadening material). Acoustic wraps and sound deadening sprays designed for use in an exhaust system can reduce transferred vibrations and alter the overall sound of the exhaust system.

warnings

  • Removing the catalytic converter alters the vehicle’s exhaust gas emission.
  • Before removing the catalytic converter, first understand the laws and requirements of your vehicle by contacting your state’s Department of Motor Vehicles (DMV) or similar agency.

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