no problems with my DPF cars done 5k now
feels it a bit like your slagging my motor off Ess3 
Not at all...
But petrols suffer from different problems to diesels once chipped as the engines behave differently. Soot will always be a by-product of cranking the wick up on a diesel by the very nature of the fuel...and DPFs don't like excessive soot.
not slagging your car off at all...just pointing out that DPFs can give problems on a standard car if the duty cycle isn't ideal...and I have more friends that have had problems with DPF equipped cars, than have had not....so the issue exists.
And where certain tuning companies are concerned - "it's not our problem mate".
I looked very closely into remapping a Mk5 PD170 - the DPF issue rang alarm bells.