Are Pakistani mechanics cleaning o r removing the catalytic converter instead of replacing it—what are the consequences?

Home > Gari Forums > Changan Forums > Changan Alsvin Forums > Changan Alsvin Catalytic Converter Issues Forums

Post a New Topic

Are Pakistani mechanics cleaning o r removing the catalytic converter instead of replacing it—what are the consequences?

Is decatting a common practice, and does it affect engine performance o r emissions?

Lubaba asked on 11 Jun 2025 18:15:01 pm

1 Answer

22 views |

Car Mechanic Expert - on 11 Jun 2025 18:19:08 pm

Yes, “decatting” is common in Pakistan due to:

High replacement cost.

Lack of emissions regulation enforcement.
Mechanics often:

Punch out the catalyst or

Use acid o r pressure wash to clean it.
While this restores some airflow, it:

Increases pollution,

May reduce low-end torque, and

Can trigger engine warning lights due to incorrect O2 sensor readings.