As an eastern european myself, I wish it was as heavily enforced as it is in western europe - anyone found to have modified their truck to bypass emission reducing devices should have the truck siezed and ordered to pay fines so heavy the thought of doing it again wouldn't even cross their minds.

And yes, I'm aware that even dealerships offer removing DPFs/GPFs as an option when buying a new car, because somehow people from my country think they live on a different planet with inexhaustable supply of fresh air, and somehow can't connect in their brains the relation between filthy, sooty air that we breathe and automotive exhausts. No no, it's all an evil plot by the west to make us pay for costly filter replacements, so it's better to cut it out right at the start when the car is brand new<mind explodes>.