There are more and more firms which remove the dpf in Poland. There are two phases.
1. First you have to connect with the ecu to alter settings. The first Zafiras, 2005 and 2006 can’t be connected directly by the OBDII cable. You need to take out the ecu, disassemble it and connect it directly to a computer / laptop. Newer Zafiras, 2007-2012 can be connected by the OBDII, so it is much easier. When you connect with the ecu, you change the settings in dpf data. The ecu now thinks the saturation of the dpf is 0% so the ecu doesn’t start a regeneration process.
2. And now, because the regeneration process doesn’t start, the dpf filter would get clogged soon, so it must be emptied. You just cut the filter open at the top, take the guts and then weld the dpf unit back. The cutting is done at the top because you then put it back to the car and nobody can see the filter has been cut open. All the sensors (temperature and pressure) must stay.
Lots of people in our clubs have removed the dpf and we all satisfied. No errors, no warning lights on the dashboard. I don’t care about short distances now, I don’t have make sure if a regeneration has started before I turn off the engine, I am not worried by the rising oil level ….etc..
In this picture you can see the empty inside of the dpf unit. You can see a temperature sensor in front of the catalysator.
