Vf can be at either end and you'll still be at 14.7 afr. It's not about what the mixture is but how hard and in which direction the system is working to get it right.
I understood perfectly and answered the question twice. Apparently you missed it both times.
Here's an idea: now that everything is working fine you can unplug it and see for yourself.
This, while not entirely accurate, is closest to the way it works.
Idle is closed loop. The OP states he's rich at partial throttle but doesn't define what he means. Is operation steady state? If so the system should be in fuel control.
The amount of silicone and what it's "alloyed" with is what matters and varies greatly. It's also very important for the application. It's the sole reason I would be hesitant to use these.
Nobody said it wasn't your AFM or associated wiring. After all the code points there. Just that everything you did was useless in verifying it was bad. Put another way if you're not going to troubleshoot the car properly you might as well simply change the thing and hope for the best.
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