That is possible.
catalytic converter
Catalytic converter plugged?
A catalytic converter can be ruined by a engine that is missing and dumping raw fuel into the converter.
That would be the O2 sensor after the catalytic converter. This sensor monitors the efficiency of the catalytic converter.
Where could I find diagram for 2003 catalytic converter on a Mazada 6
The catalytic converter(s) would be found in the exhaust system between the engine and the muffler.
Upstream would be before the catalytic converter. Downstream would be after the catalytic converter.
Having no catalytic converter installed is illegal and can cause a myriad of problems. Probably not a backfire though.
That would depend on the type of vehicle. If it is a low emissions vehicle you have to go with the oem catalytic converter.
Yes, but why would you want to?
Unfortunately, you would need access to automobile industry equipment, in other words, a catalytic converter is made with stamped stainless steel.
Your catalytic converter is located between your engine and your muffler. If it was missing you would hear it when you started your vehicle. Actually, everybody in your neighborhood would hear it.