bongiorno at all I should read and maybe even write in the serial a ford focus 1.8 dci delfhi,since I have never made these car I can read and write quietly in the serial, or are there any precautions?type for coding the injectors etc another thing from the schematic I see that a control unit for the engine management and a management injectors,but they are two separate ecu or all integrated in a single??thanks........