So far i have the AEM 4110 Wide Band working on this car, I also have an x series wideband that i install temporarily on viehicles as needed. Just switched over to Flex fuel on a Gen3 07 O/S, this should be pin 56 green on my P59 if i am not mistaken and also should read from a factory GM chanel. No flex fuel Percentage reading so far. Selected an AEM 100 PSI Sensor but reads Zero. This is a generic sensor, rated to 100 PSI. I am using this sensor to monitor fuel pressure, Green wire number 4 on my pro feature setup. MPVI 4 Transformed to AEM Pressure sensor 0 to 100 PSI. X series wideband should only work on Gen4 could not get it to read on a gen 4 but i dont think i selected transform. X series reads CAN BUS not really sure how to get that reading, i use that Guage a lot where i weld bungs on other viehicles. Nobody is going to know everything, i am just trying to build my personal layout in VCM Scanner.