Ok cause of most blocked dpf filters is mrs smith driving her 2.0tdi audi to the school and shops every day and using husbands car for long runs then when hubby gets in her car he thinks "i'll give it a clear out" thrashes the arse off it which actually drastrically increases soot loading.
A good 40 mile run at 3000rpm every couple of weeks in my opinion would drop issues by 70%.

Now before we all jump on the "save the earth" band wagon please tell me just how much shit "polution" 1 return plane flight from manchester to turkey gives out in relation to a vehicle with no dpf filter on it??

So now to the re-mapping issue.
i see both sides of the coin here in a perfect world we repair or replace the required component ok this i agree with and understand.
I had a 20.tdi A4 in last week with high soot loading i took vcds and went on a 35 mile run got soot loading from 22g to 8g but would not come out of limp or go any lower.
Right go new dpf required.
OK we have the issue again do we fit after market dpf filter to this which we all know are rarely fit for purpose and shit quality (£325)
if we do the customer will be back screaming in another 12 months with just the same issue and makes us look bad.
OK fit genuine £1238+vat now these are a pig to change so £150 labour (£1665:60) providing temp sensors come out also.

Or the dpf can be removed insides removed and ecu remapped and dpf delete carried out (by someone who is capeable and knows his stuff) customer knows he may have potential "teething issues" and is aware of just what will be done. will it pass and mot they ask. yes because we cannot see the dpf has been removed.

the dpf removal etc completed costs £450 and you will never have any dpf issues again no matter what your wifes driving style.

The customer was given all these options and went for a remap. i put him in touch with the people i know who do it right the car was done and drove perfect with no issues customer came back and tipped me £30.

Now i am not saying remapping is correct at all but with the price of new dpf filters and if this is the way your going to go you are going to get very little work in the real world no recomendations to other family memebers about your honesty etc

I am ready to be shot down in flames now but i am sorry i will give customers all the options in every repair scenario and let them make the decision.

sean