What Is A Straight Pipe Exhaust System? Pros, Cons & Cost (2022)

We love cars that make loud noises, even though they are harmful to our ears. There is just something about them that excites our senses as motorheads.

The flutter of a turbo, the whine of a supercharger, or the grumbling of a straight pipe exhaust will always turn heads. Since these sounds are so desirable, car enthusiasts spend loads of money acquiring turbos, superchargers, and noisy exhaust systems. Unfortunately, the standard exhaust systems that come directly from most car manufacturers are often not so appealing to our ears.

One way to get a good sound from your car’s exhaust pipe is to get a straight pipe exhaust system, but what exactly is a straight pipe exhaust system, and what are the advantages or disadvantages of these? Let’s find out!

What is a straight pipe exhaust?

A straight pipe exhaust is a straight exhaust system from the exhaust manifold without a muffler, resonator, or catalytic converter. Straight pipe exhausts are often loud, really loud. They are usually found in racing cars and performance vehicles due to the performance boost.

These exhaust systems let exhaust fumes flow freely from the engine’s exhaust headers, allowing them to go into the atmosphere directly through the exhaust tip. Therefore, they will also increase your engine’s horsepower when there are no restrictions for the exhausts to flow freely.

But are there other advantages other than a great sound?

Straight Pipe Exhaust Advantages

There are many advantages that come with a straight pipe exhaust system. Here’re some of the most obvious ones:

1. Increased Performance

The biggest reason that many people opt for a straight pipe exhaust is that these systems enhance your car’s horsepower and torque. These systems reduce back pressure from the engine, allowing the exhaust gases to flow freely and help the engine perform without hindrances.

(Video) How Much Does it Cost to Straight Pipe a Car (Straight Pipe Exhaust Pros & Con.

2. Aesthetics

Straight pipes also make your car stand out in the crowd if someone looks under your car. You can apply a chrome finish to the exhaust tip to make it look appealing.

Various types of welding methods are used to give beautiful colors to the tip. Furthermore, you can go for a twin-pipe setup for an even better aesthetic.

3. Engine’s True Sound

The straight pipe exhaust system lets out the true sound of an engine. Since there are no restrictions like a muffler, resonators, catalytic converter or other components, the car sounds raw and pure.

However, you might have to rethink starting your car early in the morning as that would definitely wake your neighbors.

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4. Less Weight

Catalytic converters and mufflers weigh a lot and if you are into racing, you probably know that weight of your car is a bad thing. A straight pipe exhaust weighs much less than the original exhaust.

5. Better fuel economy

A lot of people don’t know that by removing the mufflers and catalytic converter, the engine will create less back pressure which leads to better combustion. This means that you will also get a lower fuel consumption with a straight pipe exhaust on most car engines.

RELATED: How to Make Your Car’s Exhaust Sound Louder (8 Ways)

Straight Pipe Disadvantages

Just like everything else in the world, a straight pipe exhaust system has its advantages and disadvantages. It is up to us to decide what to sacrifice and what to gain.

(Video) Is Straight Piping Your Camaro (or any car) Worth It? | Pros & Cons of a Straight Pipe Exhaust Setup

1. Not Cost-Effective

Straight piping installation is expensive. Complete New pipes are not cheap and hard to come by for a good price, so there is a trend for custom-built exhaust pipes. Furthermore, after you opt for a straight pipe exhaust system, you often have to tune your vehicle according to certain standards to get the most out of it.

2. Rampant Emissions

Yes, straight pipes make the best sound, but they are not great for the environment. In the late 20th century, catalytic converters were introduced to vehicles to counter the effects of pollution and harmful emissions caused by cars.

When you straight pipe your car, you often remove the catalytic converter, which is really bad for the environment and exhaust emission tests.

3. Often Too Loud

Sometimes, the only reason motorheads go for a straight pipe setup is that they want their car to sound loud. They don’t realize that straight pipes can make their car extremely loud to the extent that starting and driving one in a suburban neighborhood could warrant police attention.

Enthusiasts that go for such systems usually only drive their racing cars on race tracks. So, if you are lucky enough to have a race-track in your city, a straight pipe setup would be a great inclusion for your vehicle as you will be able to test it to its limits.

4. Difficult to sell

Your car will be difficult to sell with a straight pipe exhaust installed, so always keep the original system to install it back later on your car when it is time to sell it.

5. Not road legal

If you are going to modify your street car with a straight-pipe exhaust system, you should think twice. Removing the catalytic converters or mufflers is not legal in most states in the United States, but it does vary from state to state. Therefore, you want to examine the rules of your state before cutting the exhaust pipe.

If your car is not insanely loud and you do not keep 7000 rpm when you cold start it in the morning in your neighborhood, then you will most likely be fine. However, you can attract some problems when doing the annual inspection of the car, depending on the state.

How Much Does a Straight Pipe Exhaust Cost?

A normal straight pipe exhaust for most cars costs between $200 to $600 and a labor cost of $100 to $200 if you want a professional to install it. So you can expect a total cost of $300 to $800 for a straight pipe exhaust.

(Video) 5 Reasons You Should ALWAYS Straight Pipe Your car!!

But, a straight pipe exhaust cost totally depends on what type of car you have and what type of exhaust you want.

If you can weld yourself and are willing to destroy the original exhaust pipe system, it will get a lot cheaper. Remember that it is good to have the original exhaust if you want to sell the car.

If you want really high-standard exhaust pipes made of titanium, you will have to spend even more.

How much HP does straight pipe add?

You can expect between 0-10 hp extra on a standard car with a straight pipe. The amount of horsepower and torque a straight pipe exhaust adds totally depends on your car model and which modifications you already made.

A very powerful engine will thrive much more with a straight pipe and in this case, you can add a lot of horsepowers, just by letting these horsepowers free by removing the restriction. On standard cars with a 4 cylinder engine, you may not notice any difference at all!

What’s better a muffler delete or straight pipe?

The most restrictive part of the exhaust system is the catalytic converter. If you decide to remove the mufflers, your car will definitely be louder, but it may not help a lot with the flow of exhausts, and therefore you may not notice a horsepower increase.

However, removing the mufflers and not the catalytic converter is a much better way to avoid trouble and save the environment. A muffler delete is often much cheaper than a whole straight pipe exhaust. It’s also a cheaper option to replace the exhaust pipe from the catalytic converter and back – also called an aftermarket cat-back exhaust system.

FAQs

Do you have to tune your car after straight pipe?

You might have to tune your car after installing a straight pipe, but it depends on the rest of your setup and your car model. If you have other modifications also, like a high-flow air filter, you might need to re-tune your car to take advantage of the new airflow through the engine. A straight exhaust pipe will only reach its full potential with a tune.

Can a straight pipe exhaust damage the engine?

There is some debate over whether a straight pipe exhaust can damage an engine, but most experts seem to agree that it can. Reducing the backpressure with a straight pipe exhaust, can in some cases cause your air-fuel mixture to run lean, which can damage the engine’s internal parts. It may also increase the horsepower and torque of your car engine, which it may not handle well. Therefore a tune is recommended after installing a straight pipe exhaust.

Is it OK to run an engine without exhaust?

It is possible to run an engine without the exhaust. However, it’s not advisable because it will make the engine crazily loud. Also, running an engine without exhaust can be dangerous to your health, as the fumes will enter the cabin and you would be inhaling all of those fumes and gases. So, if you’re having problems with your vehicle’s exhaust system, get it fixed as soon as possible. There is also huge a risk of fire, due to the exhaust combustion coming directly out from the cylinder head.

How can I make my straight pipe sound better?

If you are not happy with your straight pipe exhaust sound, you can either try to change it to other materials like a titanium exhaust. You can also try experimenting with different pipe sizes and shapes.

(Video) Why straight-piping your car is A BAD IDEA.....Just buy an exhaust kids.

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FAQs

What are the cons of straight piping a car? ›

Drawbacks to Straight Pipe Systems

Increased emissions rank near the top of your drawbacks, but only if you want a street-legal car. If you only drive your car on the track, you don't have to meet emissions standards. Too much noise can get you in trouble with your neighbors and perhaps the authorities.

How much does it cost to get a straight pipe exhaust? ›

The average cost for straight piping a car or a truck is around $1,000 to $2,000. This includes the straight pipe kit and the installation charges. If you choose to do it yourself, you'll save about $100 to $200.

Is it worth getting a straight pipe? ›

The primary advantage of equipping a straight pipe exhaust to a performance engine is that you'll see a definite boost in your horsepower. This result occurs because the system reduces the amount of backpressure from the engine, allowing the exhaust gases to form with greater freedom.

Is straight pipe better than exhaust? ›

Straight pipes offer better flow than many popular performance mufflers. This can be helpful if you're trying to maximize performance and fuel mileage. However, high quality performance mufflers such as Paradox Performance Mufflers offer flow just as good -and sometimes better- than straight pipes.

Does straight pipe hurt your engine? ›

A straight pipe, for example, can cause exhaust gas velocity to increase. This will likely reduce engine performance below 2,000 or 2,500 RPM, making your vehicle a little slower to launch from a stoplight.

Does a straight pipe waste more gas? ›

Both muffler delete and straight pipe do not improve gas mileage. In some cases, gas mileage becomes even worse because drivers unintentionally rev more because of the improved sound. If your main concern is gas mileage, then muffler delete and straight pipe are not for you.

How much HP does straight pipe add? ›

You'll likely gain about ten hp with a straight pipe as compared with five hp or less by just taking off your muffler. Keep in mind that putting on a straight pipe also involves adjusting your fuel injection and otherwise tuning up the car.

Do you need a tune for straight pipe exhaust? ›

Straight pipes have the potential to offer bigger power gains than performance exhaust systems, but only if the car is tuned properly. With an untuned car, the difference in power you're going to get from a straight pipe exhaust versus a performance exhaust is going to be negligible.

How long does it take to install a straight pipe? ›

If you are also asking, “How long does it take to straight pipe a car?” It only requires around 30 to 60 minutes, depending on how fast you can get the job done.

Does straight pipe cause check engine light? ›

Of course it will.

Can I replace catalytic converter with straight pipe? ›

The short answer is yes you can.

This is because a catalytic converter's primary job is to convert dangerous emissions (like carbon monoxide) from gasoline-fueled engines into more environmental-friendly gases, like carbon dioxide or water vapor.

Does straight pipe remove catalytic converter? ›

Yes, straight piping removes your cats, and it is also illegal to remove your cats if your vehicle came with cats from the factory.

How much horsepower does removing a catalytic converter add? ›

At best, you can gain additional 15 horsepower when removing the CAT. This depends on the engine size – bigger engines have the potential to gain more horsepower when backpressure is decreased. If you bring your car to a tune after removing CAT, you can even double the horsepower gain to 30 horsepower.

Does straight pipe sound good? ›

A straight pipe exhaust is a straight exhaust system from the exhaust manifold without a muffler, resonator, or catalytic converter. Straight pipe exhausts are often loud, really loud. They are usually found in racing cars and performance vehicles due to the performance boost.

Does straight piping void warranty? ›

Some say it cannot be detected, others say it can. Straight pipes shouldn't void your warranty except for your exhaust piping only since it's not factory. To ask them to replace an aftermarket exhaust under warranty is just assenine. If you do straight pipes, make sure you put the proper size on there.

How can I make my car sound louder? ›

Here are a few tips for making your car louder:
  1. Get a new muffler. If you put a smaller muffler on your car, it will be much louder, especially when you accelerate.
  2. Upgrade your engine. ...
  3. Drill holes in your exhaust. ...
  4. Get an exhaust tip. ...
  5. Make your exhaust pipes bigger.

Is straight pipe louder than Catback? ›

Generally, it would be best to choose catback exhaust over the straight piping. Catback exhaust systems are legal and significantly increase horsepower and loudness – they are ideal for every day drivers or those who often run on the street.

Why do straight pipes pop? ›

What causes a car to pop and bang? “Pops and bangs” are created by unburned fuel in the exhaust system. When excess fuel enters the exhaust system it increases in temperature and ignites inside the exhaust instead of the combustion chamber. The noise can be exaggerated by fitting a decat or full decat exhaust system.

How much money does it cost to straight pipe a car? ›

Straight piping a car generally costs between $1,000-$1,500 on average, including parts and labor. What is this? Straight pipe exhaust kits (parts) cost around $700, and labor is a few hundred dollars. If you do it yourself, have the tubing and tools you can do it for almost free.

Whats louder muffler delete or straight pipe? ›

Yes, straight pipes are somehow louder than mufflers because they lack a noise cancellation system. They, in turn, enable the engine to produce an original sound. Mufflers are featured to enable the engine not to exhaust all its sound, therefore being not too louder than straight pipes.

How do you straight pipe a car without welding? ›

The band sleeve clamp is best used on a straight pipe since it relies on pressure for the connection. Place the sleeve around the pipe and tighten until the exhaust pipe is connected. If your exhaust pipe connection needs to bend, the flexible braided pipe is what you want.

Does straight pipe lose torque? ›

So yes, you WILL lose torque due to a lack of backpressure.

What is a cat delete? ›

Deleting a vehicle's converter increases the horsepower automatically. This is achievable because the catalytic converter removal creates a strong exhaust gas exit source which reduces engine backpressure.

What size straight pipe do I need? ›

What Size Exhaust Pipe Should I Use? The quick and easy way to choose what diameter pipe you will need from the headers to the mufflers is to go back to the old rule of thumb, that for every 100 horsepower, 1 inch of total pipe diameter is needed across the system.

Does a bigger exhaust use more fuel? ›

If you are always running your engine at high rpm (for example if you are racing) then you may benefit from a larger exhaust. You will get poorer fuel economy, lose low end power and your maximum torque may be reduced but you'll gain high end power.

How much does a loud exhaust cost? ›

How Much Does a Custom Exhaust System Cost? Speaking to a professional is the best way to get an exact quote for your car, but in general, you can expect to spend anywhere from $150 to $2,000 for parts and $75 to $200 dollars for labor.

What happens if I straight pipe my car? ›

However, it has a few disadvantages. Driving a straight-piped car will produce a drone. You will feel vibrations alongside the loud sound, something that can be uncomfortable, especially during longer rides. Keep in mind that a straight pipe exhaust system is illegal in most states and causes damage to the environment.

How much HP does straight pipe add? ›

You'll likely gain about ten hp with a straight pipe as compared with five hp or less by just taking off your muffler. Keep in mind that putting on a straight pipe also involves adjusting your fuel injection and otherwise tuning up the car.

Do you need a tune for straight pipe exhaust? ›

Straight pipes have the potential to offer bigger power gains than performance exhaust systems, but only if the car is tuned properly. With an untuned car, the difference in power you're going to get from a straight pipe exhaust versus a performance exhaust is going to be negligible.

Can I replace catalytic converter with straight pipe? ›

The short answer is yes you can.

This is because a catalytic converter's primary job is to convert dangerous emissions (like carbon monoxide) from gasoline-fueled engines into more environmental-friendly gases, like carbon dioxide or water vapor.

How long does it take to install a straight pipe? ›

If you are also asking, “How long does it take to straight pipe a car?” It only requires around 30 to 60 minutes, depending on how fast you can get the job done.

Does straight pipe Turn check engine light on? ›

Of course it will.

Why do straight pipes pop? ›

What causes a car to pop and bang? “Pops and bangs” are created by unburned fuel in the exhaust system. When excess fuel enters the exhaust system it increases in temperature and ignites inside the exhaust instead of the combustion chamber. The noise can be exaggerated by fitting a decat or full decat exhaust system.

Whats louder muffler delete or straight pipe? ›

Yes, straight pipes are somehow louder than mufflers because they lack a noise cancellation system. They, in turn, enable the engine to produce an original sound. Mufflers are featured to enable the engine not to exhaust all its sound, therefore being not too louder than straight pipes.

How can I make my car sound louder? ›

Here are a few tips for making your car louder:
  1. Get a new muffler. If you put a smaller muffler on your car, it will be much louder, especially when you accelerate.
  2. Upgrade your engine. ...
  3. Drill holes in your exhaust. ...
  4. Get an exhaust tip. ...
  5. Make your exhaust pipes bigger.

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