Posted this in the DIY forum, but figured I'd post it here too.

Please read, question at the end.

OK so I'm using tunerpro rt and aujp v.4 (which is freaking awesome btw) on a 730 ecm and I am also using an autometer cobalt wideband afr. My problem is that if I connect the output wire from my gauge to the ecm, my log in tunerpro does not read the same as the gauge itself. After doing some research, it turns out that the gauge itself does infact accept the 0-5 volt signal from the wbo2, however, it then spits it back out as a 0-4 volt signal for a datalogger (or in this case the ecm and tunerpro). I believe this is the reason behind the discrepancy because the new voltage range is different than what the ecm/tunerpro should be reading.

To remedy this, I opted to skip the output wire altogether and splice in to the 0-5 volt signal wire from the wbo2 going to the gauge and piggyback it into the ecm. This also did not work. With the ecm hooked up this way, my gauge would only read 14.5 afr and not change, and the ecm would read
10.xx afr. Disconnected and the gauge worked fine.

I do not know what to do about this. I have tried searched and have come up with nothing. Anyone run into this problem? Any Ideas?

THX in advance. - Bob