why they had dpf brick removed without remap?-Limp home mode.
It is difficult to perform regen without brick - because you will not raise the temp in the exhaustto complete regeneration.
One more question-whats the point to reset the counters - only with removing brick- still limp mode due to unexpected dpf pressure-dpf empty.
And the last one dpf removed+good remap =no more regenerations =better fuel consumption.