Have you checked the wiring diagrams to confirm where it is getting speeds from? Different applications pull it from and send it to different places....
I just want to clarify this setup is just a "gauge". At no point would I recommend anyone tune bye eye. My setup is no different than any other setup...
The issue is, that will only really work a steady load. AFR changes way too fast when information is really needed. Too fast to read by eyes. See FB...
The P0606 is most likely going to be a pedal OS mismatch. It's always best to get the controller/pedal/throttle body out of the same vehicle so this...