catalytic converter

my friends have a 2003 model megane has had a problem in the past days, and the master converter cut it in square shape and emptied it and boiled it back there is a little increase in the sound, but if my satisfied with the performance is used in this way, do they have a problem and more importantly, do they have a problem in the examination? thanks in advance.

I do not know about the examination, but it will certainly burn.

As far as I know, it does not go through the examination, so in Istanbul ... We would have caught it, they were looking at the converter specially and checking whether it hurts. obviously already understood ...

Whether the box is empty or not, it will not have any examination. If you continue to use it normally, it will not burn much, if it is satisfied, you should never play it.