Is this still a current issue or can we use the secondary O2 sensor for wideband input?I've tested the SO2 input and the good news is that it does work (disclaimer: we don't have an AEM so did not test with that). The bad news is that the voltage translation from the wideband output to the ECU AD value is not linear, so for a wideband input the EGR lift is the only input option for the moment.
Its difficult to find a pin for the harness to connect to the EGR since it is specific is size and shape. Have you had success finding this locally or did you rob it from a junked harness?
I have the PLX wideband and would like to get this detail ironed out.