I'm trying to get the absolute full resolution out of my wideband, but ....

I stumbled into another barrier here. The wiring diagram schematic displayed below doesn't really show in depth analysis or
in word description of that extra additional 10uF capacitor linked from the right point of R5 to the bottom far right point below C70.
All it's telling me to do is jump C3 with R5 underneath the PCB, and call it a day ? If so, is this all that needs to be done so
D14 is able to capture that 5 volt signal ?

 

You can also use D10 or D12 as the input... They have a native 0-5v input and require no modding to the ECU. eCtune supports D10/D12 you just have to change it under the Wideband settings tab.