We had the same problems listed above. Previously trusted garage assured us non OEM dpf would be fine and could be mapped into system. Not true. Honda dealer assured us genuine item would remedy - correct! Cost of £1065 then threat of legal action obtained refund from non-Honda and no longer trusted garage. The truth is if diesel cars with dpf do not have regular long runs to activate dpf auto-regeneration temperatures, this problem will repeatedly occur.
The truth is diesels are not suitable for most journeys on congested roads in UK.
Cut your losses and opt for petrol/hybrid/electric.
