chiptunning

Hey girls and boys, I have to get rid of a few questions about chiptunning, for sea support or alibi. I want to get rid of my Omega Kombi 2.5DTI Built 05/2003 now at chip4power in Ludwigshafen. Does anyone have experience with it and what about the ABE of the car? Are there thermal problems or with coupling? What about the transmission? And does it really bring so much, according to the homepage of “chip4power” 300 Nm to 380 Nm and 150PS to 185PS? Thank you for your Ant words JLN