It's 1000CC. Catalytic Converter can create really a mess. There are so many claiming themselves as experts in dealing with catalytic converter but they know nothing. Don't go there, just get a can of Liqui Moly Cat-Cleaner (it is an expensive thing), open the nut of oxygen censor, pour all contents of the can into the hole, then start engine and keep higher RPM for a couple of minutes -- that's it.
There's another easy way, some other brands offer cheaper price and they have to be emptied on the fuel tanks and gradually your cat.. will be cleaned and you will have to repeat the process every 10,000km if the converter is old enough.
Remember don't go to the so called experts, they will ruin your PKR 1,50,000 catalytic converter. The catalyst formulation comprises three key constituents: precious metals (platinum, palladium, rhodium), alumina, and rare-earth-based materials which enhance catalytic activity of the metals. Ceria is typically used in this capacity.
The purpose of this part is to remove all harmful gaseous emissions including carbon mono oxide and convert them into CO2.
These mechanics intentionally or unintentionally remove palladium from the honey comb of the cat and who do with intention sell this expensive element for several thousand rupees.
