Many manufacturers now add additional patches and codes placed inside the ECU in order for the DPF to regenerate more often.
Trying to remove all of these codes and patches is no simple task, as the additional codes are located elsewhere in the ECU.
Vehicle owners are experiencing problems with the DPF removal ECU software, and although initially the software would seem to work, around 100 miles later, the DPF light would return.
This causes the vehicle to try and regenerate, which often places it into "limp-home" mode, and reduce the engine power. Be warned, this will cause damage to engines!