Thanks Pete, though it was a team effort so I won't be taking all the blame or credit
I know threads can get rather lengthy and confusing but all the detail is here for the record so I'm not keen to repeat it - happy to summarise what I believe were the fixes.
Dash warnings Service and Risk of Particle Filter Blocking
This was cleared once Diagbox was told the DPF had been replaced.
Hesitation and flatspots
Remedied by replacing the air doser as the air heater butterfly was severely restricted.
Turbo underboost
Faulty vacuum feed to turbo cured by replacing both solenoid and actuator
GiveMeABreak wrote: ↑30 Jan 2019, 18:20 Excellent - now we're looking forward to seeing your new X7's MPG as compared to the MK II!
Has anyone started a book yet in the back rooms?
I'm more relieved, to be honest Colin. The key's waiting for you if you'd like to take it for a spin again (though it's not currently insured).