How Much HP Does a Cat Delete Add?

A cat delete adds around 10-15 horsepower to a car’s engine. If you’re looking for a straightforward way to get more power out of your car’s engine, a cat delete may be just what you need.

A cat delete, also known as a catalytic converter delete or test pipe, is a modification to your car’s exhaust system that removes the catalytic converter. The catalytic converter is designed to reduce harmful emissions, but it can also impede the flow of exhaust gases, robbing your engine of power.

By removing the catalytic converter, you can improve exhaust flow and increase horsepower. However, it’s important to note that removing the catalytic converter is illegal in many areas and can result in hefty fines. Be sure to check your local laws before making any modifications to your car’s exhaust system.

How Much Horsepower Does a Catalytic Converter Delete Add?


The Role Of A Catalytic Converter

A catalytic converter is responsible for reducing the pollutants in a vehicle’s exhaust gas. It works by converting harmful gases into harmless ones through chemical reactions. The converter contains precious metals such as platinum, palladium, and rhodium that initiate and control these reactions.

Though it significantly reduces emissions, it can also slightly decrease a car’s horsepower. This is because the converter reduces the flow of exhaust gases, which results in a reduction in power. However, the impact on performance is usually minimal and not noticeable in most cases.

While a catalytic converter may slightly decrease a car’s horsepower, its benefits in reducing harmful emissions far outweigh any minor decrease in engine performance.

How Much Horsepower Does A Catalytic Converter Delete Add?

A catalytic converter is designed to reduce emissions, but it can also limit horsepower. The horsepower loss with a catalytic converter varies depending on factors like engine size and type, as well as where and how the vehicle is driven.

In general, removing a catalytic converter can increase horsepower, but the gains can range anywhere from a few horsepower to substantial increases. However, it’s important to note that removing a catalytic converter is illegal in many places and may impact emissions.

Moreover, adding a catalytic converter can reduce harmful pollutants, but may also slightly reduce horsepower. Ultimately, it’s important to weigh the benefits and drawbacks before removing or adding a catalytic converter to your vehicle.

Do catalytic converters rob horsepower? Lets find out! Lexus ISF Cat Delete

The Pros And Cons Of Removing A Catalytic Converter

Removing a catalytic converter can add significant horsepower to your vehicle but it does come with its fair share of pros and cons. One of the biggest benefits of removing a catalytic converter is increased power and performance due to improved exhaust flow.

However, this comes with a few risks since catalytic converters play a vital role in reducing harmful emissions. Without it, your vehicle’s emissions could be significantly higher, which can lead to hefty fines. There are also alternatives to removing a catalytic converter, such as upgrading to a high-flow version or using a performance exhaust system.

Ultimately, it’s up to you to weigh the pros and cons and determine if removing a catalytic converter is worth it for your vehicle.

Frequently Asked Questions Of How Much Hp Does A Cat Delete Add

Will A Cat Delete Make My Car Louder?

Yes, a cat delete increases the sound of your car’s engine as it changes the exhaust system.

Is A Cat Delete Legal?

No, a cat delete is illegal in most states as it violates emissions regulations.


After reading this article, it is clear that a cat delete can significantly increase your vehicle’s horsepower. The exact amount can vary depending on your car’s model, but expect a gain of 10-15 horsepower to your engine. With more power, your car will experience improved acceleration and overall performance.

However, it’s important to note that a cat delete is not legal in all states and can result in hefty fines if caught. Additionally, removing your catalytic converter can greatly harm the environment and contribute to air pollution. It’s essential to weigh the pros and cons before making a decision.

Ultimately, if you live in a state where it’s legal to remove your catalytic converter and prioritize horsepower over environmental concerns, then a cat delete may be a worthwhile investment. As with any modification, consult with a professional to ensure proper installation and safety.