A180 w176 1.5 d auto amg sport losing power please help!!!

[Wezwithaz]

Hi it’s been quite a journey I purchased the above car on a 64 plate and on the 150 mile journey the engine management light came on so I called the seller who advised I drive on so I got about 30 miles further and it was hopeless I think I would still be driving back now so I had it recovered and it was diagnosed as a full dpf and from the way I was told it was full they ultrasonic cleaned and it ran ok after but still lacked power I had it mapped and it came in on the dyno at 90bhp and it was tested and mapped to 140 ish it drove much better but still lacks power it gets to around 3k revs in 4th for example and then hesitates massively for a couple of seconds then goes for it the best I can get the fuel economy to it 25mpg and it drives like a bag of arse I’m clearing codes every few days but with no joy to a long term resolution. Help!!

This morning I have disconnected the maf which lets the car drive perfectly as it should proper acceleration and just as I thought it should but obv this brings up more faults and it won’t regenerate so I know it’s not a fix but maybe it might shed some light on it all. I did think try a new maf sensor to see if that does it but I think it’s only half the issue