The Pros and Cons of a Cat Delete on Your Car

Are you seeking to boost the power of your engine or improve its sound by performing a Cat deletion? Are you trying to save money for repairs? Although it may sound like a great idea take out the catalytic converter some disadvantages to be aware of.

Whatever the reason you have for taking out the catalytic converter this article will help learn what is a delete of the CAT is, how to accomplish this, as well as how it could impact your vehicle and the amount it’s going to cost. Let’s get started!

What is an Cat Delete?

Cat delete, also known as catalytic converter delete is a modification to the exhaust system of a car which completely eliminates the catalytic converter, and replaces it with straight pipe. It can increase the car’s power and acceleration, but it also results in higher emissions, and could not be allowed.

The main reason why someone does the cat remove on their vehicle is to cut costs on repairs. Catalytic converters are an element that wears and is likely to require replacement. By eliminating it owners of the car will not have to pay for replacing it.

However, it’s not just taken off when there are issues. Many people are seeking that additional exhaust flow, and also the benefits of removing the catalytic converter.

What is the reason you should consider a Catalytic Converter is important?

Catalytic converters help decrease the amount of pollutants in exhaust from cars. They accomplish this by converting toxic gasses into less harmful substances.

Catalytic converters work with a catalyst typically a precious metal such as palladium or platinum to convert pollutants from the emissions gases to less toxic substances.

The catalyst aids in breaking down and break the harmful molecules into harmless gases harmful to the ecosystem before being released into the air.

Catalytics are crucial as they can prevent the long-term as well as short-term health problems such as heart disease, asthma attacks cancer, asthma, and premature death.

Eliminating a catalytic converter is extremely detrimental to the environment. It not only increases the quantity pollutants released into the environment however, it also reduces the efficiency of fuel in many cases and increases the vehicle’s emissions.

Catalytic converters first came into use in the 1970s, in an effort to cut down on the pollution caused by cars. They’re now legally required in many states and countries.

How a CAT’s Delete can be beneficial

While the majority of states require an catalytic converter in order to drive your car in a legal manner there are a number of advantages in getting rid of it.

A few people do it to reduce weight Some do it for improved horsepower Some do it simply for the enhanced motor sound that we all enjoy.

1. Better Engine Sound

The main benefit of eliminating the stock CAT is better engine sound.

Many people who decide to remove their catalytic converters do it for the better sound of the engine similar to the removal of a muffler.

On engines that are big, such as V8, sound will be more prominent. It’ll have the sound of a deep, throaty tone which many people like.

If you’re searching for a method improve the sound of your automobile powerful without investing a lot This is a inexpensive method to achieve it.

2. Power Gains

Catalytic converters are able to limit the flow of exhaust gases so, their removal can result in modest power gains.

The catalytic converter appears like the honeycomb, which blocks gasses from flowing through your exhaust pipe.

Through reducing backpressure your engine will work more efficiently and generate some more power.

Naturally, these rewards will be minimal as you’re not likely transform your vehicle into a racecar with this, however it’s an enjoyable reward.

How much power you receive will depend on your engine, as well as other factors However, it’s generally just a slight increase.

Without tuning the car could gain as much as fifteen horsepower through the elimination of your catalytic converter. If you make a tune after you could increase the horsepower as much as 30 horses.

3. Weight Reduction

Another benefit of getting rid of the catalytic converter you have is weight reduction. Catalytic converters can be quite heavy, and getting rid of them can reduce the weight you carry around.

Every ounce you lose is a benefit in the performance department as well as weight savings. The savings could add up when you remove several catalytic converters.

A side note that the weight reduction may increase fuel efficiency as your engine won’t be required to perform as hard to move the vehicle.

4. Low Cost

The price of eliminating the catalytic converter in your current configuration is not that high, especially when you consider it in comparison with other modifications to performance.

You can carry out an CAT deletion by yourself at a cost of less than $45, if you have the basic tools and the necessary knowledge. If you do not have the motivation, skills or the time to perform the task yourself, a workshop can help.

It’s a simple procedure that anyone is able to do and doesn’t require any specific skills or experience.

Negatives of a Cat to Remove

Improvement in sound, minimal weight loss, power gain or the catalytic converter is not working. There are many reasons to get rid of this converter.

But, obviously there are some disadvantages to the removal of any catalytic converter. One of the biggest drawbacks of the cat remove is that it creates amount of air pollution caused by it that is prohibited in the majority of states and countries.

1. CAT Delete is illegal

As we’ve mentioned that the biggest drawback to the removal of one’s catalytic convertor is the fact that doing so is illegal. In the majority of US states it’s illegal to drive with no catalytic converter. This could be punished with a fine for driving with one.

Different countries also have laws similar to ours, and it’s essential to research the rules in your area prior to removing the catalytic converter in your home.

If you are in a state where safety inspection is mandatory for driving an automobile and pass the exhaust emission test.

Driving in cars without catalytic converters a crime however, it’s also harmful to the planet. Catalytic converters aid in reducing emissions and pollutants, so the removal of them could lead to greater pollution.

If you choose to remove the catalytic converter in your car, it’s recommended using it on race cars exclusively. So, you don’t be liable for a fine and it will reduce the impact on the environment since it’s not a car for commuters which is used every day.

2. Air Pollution

Another disadvantage of removing this catalytic converter would be the air pollution it produces.

Due to the heat that generated by the engine it also produces compounds that aren’t usually found for example, carbon monoxide.

Carbon monoxide is able to cause damage to the ozonosphere. It can be harmful when in high doses to humans.

NOx is a different pollutant produced by engines and is equally harmful to the environment.

They contribute to the formation of acidic rain and smog and health issues such as the bronchitis.

Catalytic converters can help reduce the emission of pollutants and other emissions. Therefore, removal of the CAT can cause greater pollution.

Therefore, while eliminating your catalytic converter could be beneficial for performance, it’s not ideal for the environment.

If you care just a tiny amount about the environment This will be enough for you to be convinced to take down this catalytic convertor.

3. Gas Mileage

Have you ever thought about how converters for catalytic combustion can also help save you money?

In fact, by decreasing the amount of pollution that are released into your car’s exhaust and catalytic converters, they can boost your gas mileage. They’re also durable, meaning that they’ll last the lifetime of your car and are a long-term investment.

Even though, eliminating the cat is likely to result in a slight reduction in the gas mileage , at the very least. It’s likely that you won’t even notice the impact.

4. Non-Renewal of Warranty

If your vehicle still has an original warranty, the removal of the catalytic converter is likely to cancel it. It is at least the warranty on the cat along with the other exhaust system.

If you encounter any issues with your car following the deletion of your catalytic converter then you won’t be able get it repaired without cost.

We do not recommend removing the catalytic converter in the new car unless you’re not worried for the warranties.

5. Reduced Resale Price

Another thing to keep to be aware of is taking out the catalytic converter is likely to lower the value of your vehicle.

Except for the car enthusiast purchasing the vehicle, most buyers prefer vehicles which are safe and don’t put them in trouble.

If you don’t intend to drive your car until the end of time eliminating the catalytic converter may not be the most sensible option.

6. Tuning is required

If you decide to remove the catalytic converter in your vehicle, then you’ll have to tune your engine.

The catalytic converter assists in maintaining the backpressure in the exhaust system.

Without it backpressure, it is too low which means that the engine will not operate as efficiently.

It is the ECU of your car that (computer) must be programmed in a new way to alter the ratio of air to fuel and timing.

If you do not tune the engine after removing your catalytic converter then you’ll notice a decline in performance.

Check engine lights may even be lit on certain cars since removing the catalytic converter lets toxic gases traverse the exhaust system. This causes the sensors notify the car of an “broken” catalytic convertor that’s not functioning.

Catalytic Converter Remove Cost

What is the cost to eliminate this catalytic converter?

The price will depend on the model and the make of your vehicle and the service you go to. In general you should expect to be charged between $200 to $500 to get the catalytic converter removed and the tune that is required. Removal of the CAT by yourself can cost up to $50 to purchase the necessary materials.

The only cost to do this yourself would be the price of a new straight pipe which is welded to the spot where the CAT was to be.

It’s a straightforward task to complete at home if your familiar with welding and cars.

How to get rid of a CAT at Home

To carry out a CAT delete at home, you will require these tools

  • A welder
  • A reciprocating or hacksaw (a grinder can also be used)
  • A new pipe (can be bought from any auto parts retailer)
  • A trusted friend (Not essential, but useful to hold items in place while you are welding)

Here’s how to do the CAT delete at your home:

  1. Find an extension pipe that’s identical in diameter to your exhaust systems. The pipe must be used in order to repair the catalytic converter. Be sure that the inside and outer diameters are in line with the diameter of the exhaust system in your vehicle.
  2. The car should be jack-up for access to the exhaust pipe. Use jack stands to hold the car in place as you work underneath.
  3. Unmount your exhaust systems. It’s easier to join an exhaust system that’s not attached to the vehicle.
  4. It’s next to locate the catalytic converter in the car you are driving. It’s usually located just after the exhaust manifold, and prior to the Resonator and the muffler.
  5. After you’ve found it, you can use the Hacksaw, or the reciprocating saw to take out the CAT. Be careful not to cause damage to other components that are part of your exhaust system as you’re cutting it out. Certain vehicles employ bolts and clamps instead of welding their CAT to the ground.
  6. Next, grab the new pipe and place it to the converter catalytic. Make sure it’s well-welded, and make sure that there aren’t any leaks.
  7. Last but not least, have a companion help you start the vehicle and ensure there aren’t any leaks within your exhaust system. If everything sounds well, you’re in good shape!
  8. Don’t throw away that catalytic convertor. The cat delete is irreversible, so don’t throw away the costly catalytic converter if you’re looking to reverse the delete.

Here’s a wonderful video by Salim Karimov that visually shows how to perform the CAT delete yourself.


The removal of the catalytic converter can be quite simple However, you must remember that you’ll have to tune your engine following the process.

The expense of making your own DIY is in the expense of a new pipe that should be welded in place of the previous catalytic converter.

We do not recommend the CAT delete process for daily drivers because of the emissions of air pollutants from the vehicle. We recommend only performing it on track cars that can be tuned correctly afterwards.

There are some benefits of performing a CAT delete however the disadvantages don’t outweigh the advantages we believe. We don’t recommend performing the removal of CATs on your vehicle.


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