If you guys get any strange hesitancy, rough idle, sluggishness until boost kicked in, jolting when coming off the throttle, surging in the lower gears, unexplained acceleration coming off the throttle...... it's worth checking your cam sensor.
My ED30 had all of that and my sensor had years of swarf stuck to it, which was corrupting/blocking the signal. Swapped it out (£38 from the stealer) and it's fixed all of that
The ECU never fault coded it, so just goes to show you can't always rely on VCDS for fault finding.