I found nothing in the FAQ about it. When searching at the popular auction house, I peed on the chip tuning that is inserted between the rail pressure sensor and the plug of the same. This is to achieve a performance increase of up to 30 HP. How that? Should the control unit be suged that the rail pressure is too low and the high pressure pump immediately increases the pressure? Is there not the danger that the rail lines will leak quickly, Greetings, Franky.