What type of exhaust is the loudest?

The loudest type of exhaust is typically a straight-through or open exhaust system. This type of exhaust system removes the muffler and catalytic converter, allowing the engine's exhaust gases to flow directly out of the tailpipe with minimal restriction. The result is a much louder and more aggressive exhaust note compared to a standard factory exhaust system.

What is a Straight-Through Exhaust?

A straight-through exhaust system is designed to minimize the amount of backpressure and restriction in the exhaust flow. It achieves this by eliminating the muffler and catalytic converter, which are the primary components that create backpressure in a standard exhaust system. Without these restrictive components, the exhaust gases can flow more freely and create a louder, more pronounced exhaust note.

Why is a Straight-Through Exhaust the Loudest?

The main reason a straight-through exhaust is the loudest is that it allows the engine's exhaust gases to exit the vehicle with minimal resistance or dampening. The muffler and catalytic converter in a standard exhaust system are designed to reduce noise and emissions, but they also create backpressure that can limit the engine's power output.

By removing these components, a straight-through exhaust system allows the engine to "breathe" more freely, resulting in a louder and more aggressive exhaust sound. The lack of muffling and catalytic conversion also means that more of the engine's natural exhaust noise is able to be heard.

Potential Drawbacks of a Straight-Through Exhaust

• Increased noise levels, which can be disruptive in residential areas or violate local noise ordinances.


• Reduced emissions control, as the catalytic converter is removed, leading to higher levels of pollutants being released into the environment.


• Potential for increased engine wear and tear due to the higher backpressure and vibrations associated with a straight-through exhaust.


• Potential for legal issues, as many jurisdictions have regulations limiting the noise levels of vehicle exhaust systems.

While a straight-through exhaust may provide a more aggressive and powerful-sounding exhaust note, it's important to consider the potential drawbacks and ensure compliance with local laws and regulations.

What kind of exhaust is the loudest?

5 Loudest Exhaust Kits - Loud and Legal, Mostly

• Flowmaster American Thunder Series.
• Flowmaster Outlaw Exhaust System.
• Magnaflow NEO Series.
• Magnaflow xMOD Series. This race-bred, stainless steel, modular system is designed for the likes of the Mustang GT, Dodge Challenger, F150 Raptor, Corvette, RAM 1500 TRX, and others.

What is the loudest your exhaust can be?

It's up to you to keep your vehicle below these standards. Limits of 96 decibels are attainable, especially with stock equipment. Look for aftermarket exhaust systems that are rated for 96dB or below. Remember that louder doesn't mean faster.

What type of exhaust makes your car louder?

To make a car exhaust louder, you can install an aftermarket exhaust system like a cat-back, delete the muffler or resonator, or use larger diameter piping. More affordable options include adding larger exhaust tips or even drilling holes in the muffler, though these may have less impact. The most extreme option is a straight pipe, which removes many components but may require tuning.
 
This video explains different ways to make your car's exhaust louder: 58sIdealYouTube · Oct 18, 2021
Aftermarket systems and component removal

• Install a cat-back or axle-back system: These are complete exhaust systems designed to be less restrictive than stock, resulting in more sound. 
• Delete the muffler or resonator: Removing the muffler or resonator will significantly increase noise, as these components are designed to quiet the exhaust. A muffler delete replaces it with a straight pipe. 
• Use a straight pipe: This involves removing the muffler, resonator, and catalytic converter and replacing them with a straight pipe. This is one of the loudest options, but it can be expensive and may require tuning to work correctly. 

This video demonstrates how to delete a muffler to make a car louder: 1mThatCarLifeYouTube · Sep 12, 2025
Other modifications and tips

• Upgrade to larger exhaust tips: Installing exhaust tips with a wider diameter can increase the volume and throatiness of the sound. 
• Increase pipe diameter: Replacing exhaust pipes with a larger diameter, by about 0.50.50.5 to 111 inch, allows for greater exhaust gas flow and more sound to escape. 
• Drill holes in the muffler: Drilling holes into the muffler can release exhaust sound, making the car louder. This is an inexpensive option, but results may vary. 
• Add a performance muffler: You can replace your stock muffler with one designed to produce more sound, such as a "glasspack" muffler. 

This video shows how to drill holes in the muffler to make the car louder: 53sRex HYouTube · Dec 12, 2017
Things to consider

• Cost: Modifying an exhaust system can range from cheap DIY solutions to expensive professional installations, with prices varying based on the chosen method and parts. 
• Emissions: Removing components like the catalytic converter will make the exhaust louder but also increase emissions, which could be illegal depending on your location. 
• Legality: Be sure to check local laws regarding exhaust modifications before making changes to ensure your vehicle is compliant.