with nistune ur able to edit the maps to correct the afr of that load cell till the wideband value is safe.
the wideband controller simply has 1 digital output and 1 analog output.
the digital output wire could be connected to a laptop to use as a simple gauge readout or use in the nistune software to manually or automatically tune the maps. check AEMs site if their digital wire could be connected to a digital gauge too.
the analog output wires either replace the stock O2 sensor completely or connect it to a gauge (the two +ve -ve wires must be used in the same parallel circuit ie: +ve signal goto +ve gauge/ECU input and -ve singal goto -ve gauge/ECU input).
not sure about connecting the analog outs to both ECU & gauge in parallel (if their resistances will affect each other) cos never tried, but my preference is to run a single device per signal wire to keep interferences low.
from a simple electonics pov, when connecting a +ve signal wire to one grounded device and -ve signal wire to another grounded device like a series circuit, ur gonna get inaccuracies.
for ref my Innovate LM1 runs 1 digital cable upto my digital gauge and 1 analog to my ECU.
