Just got back from a long road trip over 2 weeks and for the last 20km (just after SWMBO commented that we got home with no issues) the D2 wouldn't accelerate well and was a little more rough (than normal) - a bit of a rumble/vibration on idle too.

We've been on a few dusty roads and I have just changed the air filter as soon as I got home and it still persists.

Can you provide any pointers as to what I should be looking for on the nanocom please or anything else that I can easily check before I start looking at the turbo/etc. please.