Catted downpipes and catless downpipes usually refer to the two different designs of the exhaust downpipes.

The exhaust downpipes with the catalytic converter are called the catted downpipes.

Catalytic converter is one of the important components of purifying exhaust gas and reducing harmful gas emissions,such as carbon monoxide, nitrogen oxides and hydrogen carbon compounds.

Advantages of catted downpipes

1.Exhaust gas purification: effectively reduces harmful substances and protect the environment and improve air quality.

2.Compliance:Many countries and regions have set regulations on vehicle emission standards. It can help a vehicle meet these emission standards and ensure compliance.

In contrast, downpipe without catalytic converter is called catless downpipes.

It may have the following advantages:

1.Optimized performance: No catalytic converter will reduce the resistance of the exhaust system, provide better exhaust flow performance, and improve the power of the engine.

2.Simplifying system: Removing catalytic converter reduces components and complexity in the exhaust system, simplifies maintenance and repair of the exhaust system, and reduces potential points of failure.

In conclusion, both catted downpipe and catless downpipe have their own advantages!

We suggest that you can choose the right head segment according to your own needs and local environmental regulations.

If have any questions, please feel free to email to: mila@cnjagrow.com 

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