Catalytic Converter Delete – Pros and Cons

A vehicle’s catalytic converter plays a vital role in emission control. However, catalytic converter delete comes with some advantages. Nevertheless, it is never wise to remove the catalytic converter quickly without considering the obvious disadvantages.

The catalytic converter, cat-cons fondly called, has become a vehicle necessity since 1975; this is because the component is vital in reducing Nitrogen-oxide gas(NOx); at the same time, some vehicle enthusiasts consider the component an essential component of a vehicle, while others believe it isn’t necessary, as they can do without it. Let’s look at what catalytic converter delete means, as well as the pros and cons.

Read Also: How to Find Catalytic Converter Scrap Value By Serial Number

What is catalytic converter delete?

Catalytic converter delete is the process of uninstalling or removing a vehicle’s catalytic converter. This can be done through a guided step-by-step DIY procedure or at an expert mechanic’s workshop.

Catalytic converter delete cost depends on whether you choose to do it yourself (DIY) or engage the service of a professional auto mechanic.

If you decide to do it yourself, it can cost around $50 or less, but you have to know how to remove the catalytic converter and replace it with a straight pipe. Alternatively, if you decide to engage the service of an expert auto mechanic, it may cost around $300 or more.

Do not worry about the check engine light staying illuminated on the dashboard after the Catalytic Converter Delete, as it is possible to remove the catalytic converter and bypass O2 sensor without the check engine light lightning up.

Removing your car’s converter can be an exciting experience, mainly because of its benefits. However, it would be best if you did not ignore the drawbacks to be on the safer side.

catalytic converter delete cost

Pros and Cons catalytic converter delete

Deleting your vehicle’s converter has several advantages; this is why most people are excited about doing it. However, every coin has two sides (a head and a tail).

Focusing on the head without considering the tail may not be ideal. Hence, it is vital to pay attention to these cats’ delete pros and cons to make the best decision on whether to opt for a catalytic converter delete kit or not.


Horsepower Boost

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

Meanwhile, the removal opens enough space for air inflow to the vehicle’s combustion chamber. This helps to speed up the combustion process and trigger the release of more horsepower.

Reduced engine temperature

Removing a car’s converter reduces a vehicle’s engine operating temperature; this is because it lessens the engine’s burden by enhancing the quick and easy release of exhaust gases.

Since removing the component creates more free exits of exhaust gas out of the combustion chamber, the engine’s operating temperature will reduce significantly.

Better gas mileage

Better gas mileage is another benefit of removing a vehicle’s converter. When you remove the part, it automatically reduces engine backpressure and operating temperature.

When this happens, the burden on the engine is reduced, resulting in less fuel consumption and better gas mileage.

Variety of fuel options

The presence of the converter hinders the use of specific types of fuel in a vehicle. For example, cars with catalytic converters consume unleaded gasoline because lead-based gas destroys the internal catalyst material in the component.

So, removing the converter grants you the freedom to explore and use a variety of fuel options, including high-performance fuel in your car.


Illegal in most U.S. states

Catalytic converter removal is illegal in most U.S. states, including California. The Environmental Protection Agency (EPA) and Ministry of Transport (MOT) ensure that they sanction car owners who remove their catalytic converter.

Meanwhile, it is impossible to pass the MOT without your vehicle’s catalytic converter in most U.S. states. Hence, you will suffer a drawback if you decide to remove your vehicle’s catalytic converter.

Air pollution

Since a vehicle’s converter ensures that toxic unburned exhaust gases producing a high level of carbon monoxide are adequately handled, taking it off will alter this process.

Without the component, a vehicle will produce a high level of toxic exhaust release that will pollute the environment and make the atmosphere harmful.

Noise pollution

Any noise or sound beyond 85 decibels is noise pollution and can be detrimental to people’s hearing health. This is what it is like to remove a vehicle’s catalytic converter.

The catalytic converter deletes sound from the engine and shoots up drastically, disturbing everyone in the neighborhood and on the street while you idle or drive, respectively.

Inability to pass the MOT test

Since a vehicle’s catalytic converter is illegal in many U.S. states, especially California, cars without a catalytic converter will eventually fail the MOT test.

Failure to pass the emission test may cause your vehicle to be impounded, especially when you resist the MOT rule or sanctions as it applies to vehicles without a cat converter.

More fuel consumption (in some cases)

Some car owners complain about the increased fuel consumption after removing their catalytic converter.

The catalytic converter plays a vital role in enhancing better fuel consumption in some vehicles. In that case, removing cat-cons may reverse the fuel consumption level.

Also, the incorrect removal of a catalytic converter may affect the proper fuel consumption level.

catalytic converter delete legal

Can you drive without a catalytic converter?

You will find search queries like “can you drive without a catalytic converter in California, Texas, and other states?” across the net – mostly in automotive forums. So, let’s answer the concern broadly to pacify all car owners about whether they can drive without a catalytic converter. If yes, how long can you drive without a catalytic converter?

In most states, it’s against the law to drive without a functioning catalytic converter on your vehicle. If caught driving without one, you could be issued a hefty fine or even have your vehicle impounded until the necessary repairs have been made. Moreover, drivers may need an active catalyst to pass their emissions test.

Driving without a catalytic converter is not only illegal, but it also carries many risks. Why so? Let’s replay the main point again to make it clear. A cat converter is an essential component of the exhaust system in a car. It’s responsible for cleaning up harmful gas emissions from the engine by converting them into less hazardous compounds.

Without one, drivers would be exposed to dangerous levels of toxic gases such as carbon monoxide and nitrogen oxide, which can cause health problems like headaches, dizziness, or even death in extreme cases.

That said, you may encounter signs of a stolen catalytic converter all of a sudden while on the move. The imminent worry would be the catalytic converter stolen, “Can I drive?” To go by the law that you cannot and shouldn’t drive without that component is crystal clear. But if you are middle of nowhere when this component is found missing, you must follow the doctrine of necessity. You must drive unless you reach home or where you can have a solution to that.

In that case, how far or how long can you drive before the cat con reinstated in your car? In fact, you can drive as long as you need because not having a cat con in the car will not create a mechanical issue. To keep sound mentally, you have to stop thinking, is it illegal to drive without a catalytic converter in Washington state, Colorado, or wherever you are?


Q: Does removing the catalytic converter affect engine?

Of course, removing a vehicle’s catalytic converter affects the engine positively. This is because the removal reduces the burden on the engine.

This automotive exhaust system component will automatically enable exhaust fumes to vacate the engine faster and easier than when it is on. Meanwhile, this can also reduce the engine’s operating temperature.

Undoubtedly, removing a car’s converter can reduce the engine’s stress to a large extent. However, these benefits also come with a prize.

Q: Will removing the catalytic converter increase horsepower?

Sure, removing your vehicle’s catalytic converter can boost its horsepower dramatically. The horsepower increases because the backpressure reduces once you remove the catalytic converter. Hence, the car can release exhaust gases quickly and faster.

Also, the combustion chamber gains more enhancement because there will be more active O2 gas entering the combustion chamber, which could be reduced by an exhaust back pressure but improved once the catalytic converter is off.

So, if you desire more horsepower in your vehicle, you may want to remove the catalytic converter, among other means of gaining more horsepower. However, the possibility of driving without your vehicle’s cat converter depends on several factors.

Q: Will removing the catalytic converter make the exhaust louder?

Definitely, one of the obvious things about removing a vehicle’s converter is the loud noise it produces. However, the noise can be pretty distinctive, and some car owners like it this way.

The loud noise can be a disturbance to some people, while others may enjoy the fun. However, removing the catalytic converter may trigger increased fuel consumption in some cases, especially when it’s not correctly done.

If you desire to remove your cat converter, ensure to think about the outcome before you start the process.

Q: Is catalytic delete illegal?

Yes, catalytic converter delete is illegal because of the environmental hazard it causes. The component helps to minimize the level of toxic exhaust gases it releases into the atmosphere during combustion.

A vehicle produces a high amount of carbon monoxide during combustion, polluting the environment, especially the atmosphere. This contributes to global warming; hence, the government’s concern over using cat converters in vehicles is justified.

The catalytic converter ensures that it stores exhaust heat and uses it to convert the harmful gases that result from combustion to release less toxic gases. Besides this benefit, it won’t be easy to pass the MOT test without your car’s catalytic converter.

Q: Can I replace my catalytic converter with a straight pipe?

Most states do not permit vehicle owners to replace their cat converter with a straight pipe. The Environmental Protection Agency (EPA) ensures that car owners do not tamper with any vehicle emissions-related components; otherwise, it will attract strict sanctions.

Removing a car’s cat converter has several advantages and unique disadvantages.

So, while you are contemplating whether to remove the catalytic converter quickly, do not also forget the potential disadvantages. Always put the consequences of every action forward before making a final decision.

Q: Is it OK to drive without a catalytic converter?

This question is two-dimensional, and the answer is yes and no. Now, you may be wondering why yes and no. If you’re speaking about the possibility of a vehicle running without the catalytic converter, the answer is yes; it can work perfectly.

On the other hand, if you’re talking about the legality of driving without a catalytic converter, the answer is no – it is illegal to drive without a catalytic converter in most states.

This is crucial to help minimize the effect of toxic exhaust gases on the environment by neutralizing them to the extent that they are not entirely harmful. Meanwhile, the Ministry of Transport (MOT) pays attention to the catalytic converter when conducting the MOT test.

Final words

Catalytic converter delete is highly prohibited in most states in the U.S. If you live in California, it would be best not to think about removing the cat converter because the state strongly kicks against such practice.

Although removing this vital car component has some benefits, including increased horsepower; however, the challenges it poses to the safety of the environment should be put forward before anything else.

So, if you are considering deleting your vehicle’s catalytic converter, ensure that your state’s laws permit the such practice, and do not forget to consider the environmental effect.

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Engr. Omogbolahan Adeosun

Engr. Omogbolahan Adeosun is an automotive mechanic with over nine years’ experience, He is the C.E.O of Invadars Automobile, and hails from Ado-Ekiti, Nigeria. He obtained his Engr. (Hons) degree in mechanical engineering from Federal university Oye-Ekiti, Nigeria. Engr. Omogbolahan Adeosun writings interest areas are mainly automobile with major focus on four-wheeled vehicles. He has worked as a freelancer for over four companies’ home and abroad. He is a member of a notable professional organization Nigerian society of engineers (NSE). And his professional aspiration is setting a pace and example for the upcoming engineers, to invest their time and knowledge in making his country a proud automobile producers.

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