I'm from the netherlands.
As a hobby i started tuning my own tdi 's
Started around 2 years ago with my audi A4 110HP
Now i have i a niced tuned seat ARL which is tuned bij JD engineering to 226pk 460Nm
This i just did things like removing LMM ( maf sensor ) , launch control and such things. This because it has a special turbo and don't want to risc that.