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My Vios cars catalytic converter is bugging me for several months now. Scanners says catalytic converter below efficiency. I talk with couple of mechanics and some say iI need to change the O2 sensor, and some says i need to replace the catalytic converter which happens to be the three quarter of the exhaust pipe. cost of the genuine part is nearly 1 Lahk. Does any one know what needs to be done, Can i clean it without replacing ? I can go for a second hand part which will cost me about 20K but no guarantee.

Hi everyone I have daihatsu Hijet (2012) Suddenly check engine lights appeared and scan says P0420 Some says that I have to replace rear o2 sensor which attached to the silencer. But some says that just need to clean there. Please someone can help me out to resolve this problem. Please suggest me a good place near Negombo and how much it will cost. Thank you all

hello, my car is lancer CS1 2002 / 1.3-liter / manual transmission If i fix the OBX-R Universal Muffler SS its some change fuel consumption to my car, RS:15,000/= is that unit/ that is too much or that price OK?