Well my problem was I was getting dpf pressure sensor which had been changed and underbost from turbo error , the garage that changed the sensor said the veins on the turbo was sticking and quoted me £1,400 for a reconditioned turbo and also for the dpf to be cleaned , so far I’ve brought wyns turbo cleaner and have sprayed this in to the turbo from the intake side of the turbo up from the maf , this I believe has so far fixed the issue as I’ve done 115 miles so far and hasn’t come back as of yet which is great as only cost me £13 to do that , then I’ve took the 02 sensor out and put dpf cleaning foam down that and did a forced regen using Carly which chucked out a lot of black foam and so far as said have only done 115 miles so far but touch wood it’s been good so far .