the advice I give you ? check and recheck the map,even when you're sure...

a trainer in my area has done an ecu to a friend of mine with a bravo 1.9 120cv dpf
has only done the remapping,the car was good, but not as it should,also, every so often he was in recovery for the pressure of the diesel...my friend was going to replace the pump to resolve the problem? come to me why? we wanted to understand what he had done this mapper,I'm not a great expert but at least I want to learn...
in the map of the great trainer I found an error that I never imagined...
the limiter of the pressure was left of the original while had given the 5% of the pressure in the pi? and, of course, the car had problems...
fortunately, everything is resolved,that's why? I say to you,attentive to the interface voltage,the one and the other but above all attentive to what is then put under the car!!!