I have capacitive fuel sensors in the tanks and Princeton converters which convert to (nominally) 0-5V. The engine sensor harness schematic requires a resistor in line to limit voltage to 0-4V, as that is the required input for the AFS.

However, since the setpoints on the Princeton units can be calibrated to output 0-4V (I think) instead of 0-5V, I would think that the resistor could be avoided. Has anybody done this? Any issues? Wouldn't this be the preferred way to go??