Another update - Car is still running "well" with no more codes stored.
Long term fuel trim has stabilized round the -7% so still running a bit rich.
Monitoring vacuum/boost via the torque app seems to show that under hard accelleration, im only getting ~8psi of boost, although i am also doubting the numbers as shows a peak of almost 20psi.
Next step i think will be to get a cheap mityvac to start testing the small boost pipework and wastegate pressure.
I also need to man up enough to start doing gearbox sump-dumps, even though itll be a PITA as the R-style airbox on this model T5 is conveniently right over the top of the gearbox dipstick port..
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