On my mates car, haven't looked into it much yet but assumed actuator sticking on the turbo but its actually nice and free.

When putting your foot down on the motorway it goes into limp mode, fine around the doors.

Mpg is down on long runs also, getting about 45 now which is very low for this car.

I'm going to check the vacume pipes to see if I can't find any splits.

Clean the air flow meter to see is mpg improves, possibly replace it.

Going to clean the egr valve while I'm at it.

Anything els or other suggestions?

MAF sensor I would say, this was me about 2 weeks ago, new maf, new car. All smiles.