The car : BMW 320d E90 M47 automatic
I did a stage 1 and dosent feel more powerful , just a little bit.
The car with stock map had this values a few months ago.
Boost pressure, actual value 2595 mbar
Boost pressure, target value 2600 mbar
The stage 1 map has 2840 mbar and this are the values today:
Boost pressure, actual value 2400 mbar
Boost pressure, target value 2700 mbar

Videos :
https://youtu.be/JPjfKX24Qac
https://youtu.be/mY5FDcHatag

The turbo is dying?
And why at target value is only 2700 and not 2840?