Perfect I wanted to understand this. For now, I'm waiting for the arrival of a elm327 interface for which, as promised, as soon as I place the hw and sw of my ecu. If hw and sw are the same as your more reason I should not have problems too, in the serial.
ugoboss forgive insecurity but, willing to work in serial, for now, I would not do damage or take tools that are not compatible!
Thanks again to both of you!