Originally Posted by the suicidal eggroll
I'd go back and check your CL/OL thresholds in the tune. You should be in CL from idle to around 3500 RPM or very heavy throttle. Like you said, your logs show you only dipping into CL between about 2500-2800 RPM. It's even stuck in OL at steady throttle at 2k RPM, which is weird.
Thanks again and thanks for confirming.
Let's assume (and this is in fact the case) that the tune hasn't been touched since it was done in 2008. Could there be a mechanical factor that would cause it to stick in OL under low load? I still seem to be getting accurate readings from the MAF and front O2. If the front O2 was borked, i assume it would stick in "warm up" (7) rather than OL?