My car sometimes goes into the limp mode you that you guys speak of but only since I had a stage 1 tune done.
I am from Barbados and not Germany so the gas here is not great but I doubt the issue is gas related.
Currently the car feels like it is flat spotting around 5,500 rpms or losing performance for a second like a glitch or something. Sometimes it also feels like it is hitting a wall around 5,500roms while I am accelerating and won't go any faster.