I own a 26 year old skoda 1.9 TDI 110 HP Without touching any hardware it can be remmaped to 140 hp, which is a setting used in an Audi A4 from that era. Replacing a couple of things, like injectors turbo and intercooler, it can go to 180-190, which was also offered for the same engine. I'm happy with the 110hp, the car drives fine, and the engine is relaxed, wich has helped its longevity