Just got off the phone with the dealer, They are going to re flash the ECU and not replace the DPF. I said that others are reporting an increase in consumption after this and he said it shouldn't cause that. I also mentioned that the auto is relearning the original programming and is flaring again between changes and he replied it will do that so we will re flash that too next service. He knew nothing of a permanent fix and I assume that the ECU re flash will also revert over a period of time.
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