Yeah mine is exactly the same. I just bought brand new O2 sensors and installed them and it was still the same.
I'm using a 12202088 OS which LRT supplied the XDFs and some assistance with. I'm not sure if there's anything in the OS itself that could cause it.
But I've checked the ScanXL and TunerPro logs and both report it the same, but strangely enough the Left and Right Bank short term fuel trims oscillate up and down as they should, so they seem to be reacting to the O2 sensors, they just don't seem to register.
I'm still a bit confused by the tuning process because my car smells like its running really rich, and its using a lot of fuel, but the logs from TunerPro and ScanXL are showing my ST fuel trim around -16 in some areas which I'm lead to believe means its actually adding 16% more fuel.
Spark tables are also confusing because it seems the PCM chooses the timing anyway, and my knock sensors aren't detecting any knock.
I don't want to take it to the dyno and drop a grand before I know everything is working as it should.
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