While I'm testing and trying out different WOT air fuel ratios, any time I run my lambda down around .80 the log shows me that after 4100 RPM a MASSIVE spike in lean activity running all the way up to 9.99 until my run is done. Almost like DFCO is kicking in, or the sensor is dead and then coming back after my WOT run, but upon checking my air fuel ratio gauge (AEM) during the run it shows me my lambda spot on around .80 - .81 like I command it until redline. If I run the exact same WOT run on a leaner mixture of .83-.85 the wideband logs without a hiccup every single time though.
This tells me it has to be a configuration issue or a logger issue. I don't think it can be a dying sensor right? For the record, my Denso sensor is about 5 or 6 years old now and has seen many wide open throttle pulls during it's time in my vehicle. I am obtaining wideband data via serial data by the way, not through OBD2. Anyone have any ideas what the heck could be going on? I can attach my channels configuration and log if need be so you can see exactly what I'm talking about.
Camaro Channels.Channels.xml
gen 6 zl1 layout w AFR err.Layout.Layout.xml
Log with AFR spike running richer:
12% pulley E70 run richer.hpl
Log without AFR spike running leaner:
12% pulley E70 run.hpl