I just got a new AFX with the NTK sensor last night. Was about to set it up and start playing.
Free air display is 20.0 I figured I'd go through the free air cal steps to get 20.9 Can't seem to get the damn thing to go into calibration mode. Manual says to turn it on and let it warm up for 60 seconds, then turn it off, and then turn it back on again. When you turn it back on, hold the button down on the display for 3 seconds and it goes into cal mode. I've done that a couple times and it does not go into cal mode. I must screwing this up somehow.
I'm also wondering how you guys set your AFX up to "turn it on/off. Or more specifically, do you install a toggle switch at the display, or just unplug it from the display? I have the power wires ran to my battery posts and was thinking about installing a toggle at the display.