Now every honda workshop and dealer ship cleans cat rather than removing it.
Honda pitshop gujrat guy also told me to clean it.But since i already removed it from my two cars corolla 1.6 and swift and satisfied with their performance so i removed it.
But now i regret my decision since my civic is only 20000km driven i should have cleaned it.
That idiot destroyed my brand new O2 sensor.Now i have to install used Kabuli one
Advice:Never ever let roadside machanic to do experiment on your car.
Yes u shuldve cleaned it..removing it is never ever advised..and its very important to not take ur car or any 8th gen civic to a roadside mechanic..they might charge less but will screw up ur car and wont take the blame for it..its always better to spend a few thousand more and take ur car to honda 3s or a qualified honda pitstop..btw ive been to 3 different honda 3s workshops in lahore and nobody wants to clean it..they only destroy it..although it can be cleaned very easily..but no mechanic is willing to do it..