Hi all,

2013 SDV6 Black Edition, 80k miles.

I've had the dreaded restricted performance randomly over the past 18 months.

1) - Smoke tested - found throttle body to manifold seals damaged - replaced, fitted new clips to EGR pipes
2) - Followed the TSB and each recommendation had some level of fix required, o rings, tightened pipes, air intake rubber boot was deformed.
3) - put fuel system cleaner through (Cataclean) and injector cleaner and it made it much smoother

Yet the problem still persists.

It never does it from a cold start, I could start it in the morning and drive 400 miles no problem.
If I stop for 5 mins - or even up to an hour or so, within a few minutes of the restart it'll come up. I can clear it but it will usually come back.
The car performs great so I don't think it's an actual turbo issue (really hoping not!)
It only logs P1247 - nothing else - so it's a turbo under boost situation, but why only on a warm restart?

I've got SDD but just rebuilding the laptop with a virtual win7 build as SDD not compatible with Edge.

Any ideas? I'm at a loss