Exhaust Modifications: The Pros and Cons

Your car is designed with an exhaust system which controls the noise, direct exhaust fumes away from passengers, to improve the performance of the engine and fuel consumption. Somehow, the exhaust system does not work well as it did before. It’s time for an exhaust mods. But do you know replacing exhaust systems will have both benefits and drawbacks? 

exhaust mods
Do you know replacing exhaust systems will have both benefits and drawbacks. Source: m3post.com

Let us introduce to you the pros and cons of exhaust mods!

What Is The Exhaust System

Before getting to know the pros and cons of dual exhaust, equip yourself with the full understanding about the exhaust system. So, what is the exhaust system?

An exhaust system is usually piping used to guide reaction exhaust gases away from a controlled combustion inside an engine or stove. The entire system conveys burnt gases from the engine and includes one or more exhaust pipes.

Depending on the overall system design, the construction of the exhaust system may be a bit different. But in general, a exhaust system includes;

Exhaust manifold

The first point of contact for the exhaust gases after they exit the cylinder head. It connects to each exhaust port on the engine’s cylinder head, and it funnels the hot exhaust to the exhaust pipe. With the help of the exhaust manifold gaskets, it also prevents the toxic exhaust fumes from sneaking into the vehicle and harming the occupants. 

Catalytic converter

An exhaust emission control device that reduces toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. In another way, it helps you to still breathe the air while you drive.


a turbine-driven, forced induction device that increases an internal combustion engine’s efficiency and power output by forcing extra compressed air into the combustion chamber.This improvement over a naturally aspirated engine’s power output is due to the fact that the compressor can force more air—and proportionately more fuel—into the combustion chamber than atmospheric pressure alone.


A noise remover which eliminates noise by redirecting the airflow. Along the way, the exhaust passes through porous pipes which allow the exhaust gases to expand into sound deadening material, minimizing the noise that finally exits the tailpipe.

Why Do You Need Modify The Exhaust System

As the exhaust system does not only remove the fumes from the car, it actually works really hard and by the time, it needs to be modified. The old exhaust system can cause many problems to your engine, your car performance as the environment. There are some symptoms which indicate that you really need a new exhaust.

Engine noise:

The signal is the noise from the engine is louder than usual. As a function of the exhaust, it helps to remove the noise. But when the noise is starting louder you know that your exhaust system is in trouble.


Have a look at the exhaust itself and inspect for signs of rust or splitting. Some exhaust corrosion is normal on older cars, but if you can see excessive damage it might be time for replacement.

turn down exhaust pros and cons
If you see the rust on the exhaust system, time to replace the new one. Cre: Kiteman / Instructables

Fuel Inefficiency:

If your car consumes more fuel than it did before, it may be a symptom of a lot of car problems which includes the leak in your exhaust system. A leak will affect the system’s ability to transport fumes, leaving your engine operating at a hotter temperature and reducing your fuel efficiency.

If your car has one or all of these symptoms, for sure it’s time for you to think about the exhaust mods.

Regular maintenance at the garage can prevent damage to the exhaust system. However, if you see there may already be a problem, don’t wait until you get it checked out by a qualified technician. Ignoring the warning signs may cause further damage to the exhaust and other important car parts, costing a lot more to repair in the long run.


The Pros And Cons Of Exhaust Mods

You already know what an exhaust system is, how it works. So, let’s talk about turning down exhaust pros and cons.

The Pros Of Exhaust Mods

1. Better performance of the engine

The exhaust system is an essential system to the engine. The exhaust mods can improve your car exhaust with custom the performance of the exhaust system, by that allows the entire engine to function better.

It can be explained by the relation between the exhaust and the engine. Changing exhaust allows a quicker, more efficient path for exhaust gases to escape. Your engine will breathe better therefore create more power. The function of the car in turn improves everything about the engine’s performance: its torque, horsepower and noise. When the air can easily flow in and out, the engine’s power can be directed toward other functions. 

pros and cons of dual exhaust
The exhaust mods can improve your car exhaust with custom the performance of the exhaust system, by that allows the entire engine to function better. Source: Internet

2. Fuel saving

When your exhaust system is in trouble, especially if it has a leak, it consumes a lot of fuel than usual. Replacing a new exhaust will help you to save the fuel. The new exhaust can increase the back pressure which builds up of gases that can make the engine work harder, affecting its performance and increasing the fuel efficiency. The mileage also grow up.

3. Climate change reduction

The fluid in the exhaust system which is out of date is one of the top contributors to the atmospheric gases involved in climate change. The exhaust mods will definitely reduce the emission and save the climate. So replacing your older vehicle’s system with a new fuel-efficient system will help save the planet.

4. Car value increase

We cannot deny that changing a new exhaust system will make your car look better, sound greater and at the end, increase your car value. By equipping a high functioning muffler and new headers, the engine practically purrs with sultry performance. Your car can be recognized on the street as a high performance, high end vehicle that has been well maintained no matter its age.

For someone who wants to resell the car, it is a good invest since it will leverage your car price. For someone who owns an old car, a new exhaust mods will make your car last longer since the new exhaust system usually is built of stainless steel that will never rust over time, unlike older systems that often need to be replaced regularly due to rust. The lifespan of the exhaust system will be improved.

The Cons Of Exhaust Mods

1. High price

One of the biggest drawbacks of any large purchase is the price tag that accompanies it. Same with the exhaust system, it is kind of expensive compared to other parts of the car to replace. Also the changing requires a well understanding repairman, that’s cost a lot in the garage. But, considering the huge power and style boosts that a performance exhaust delivers, most people agree that it’s money well spent.

2. Long time to Install

The second drawback is the consuming time to install the exhaust system. As we mention above, changing a new exhaust system requires a professional repairman since the installment is not simple and one mistake can lead to the failure of the whole car. 

pros and cons of exhaust mods
Changing a new exhaust system requires a professional repairman since the installment is not simple and one mistake can lead to the failure of the whole car. Source: MotorTrend

Should You Modify The Exhaust System Or Not?

When put in the comparison, it is clear that the benefits of exhaust mods outweigh the drawbacks. Therefore, we recommend you to replace the new exhaust system when needing to minimize the risks which can happen to your car by keeping a car with a bad exhaust system. 

Moreover, a trustful mechanic is necessary for the better lifespan of the exhaust system. So send your car to a good garage to avoid any serious damage and help to maintain your car. Replacing the new exhaust system brings you a lot of benefits so do not hesitate to take your car to the mechanic for a new installment.

Final Worth

What we mentioned above is all about the pros and cons of exhaust mods. There is no doubt that exhaust mods are necessary and help your car perform better and also increase the car’s value. Keeping your car is also a good choice to help the exhaust last longer.