Jeff;
        I do not remove the hose when setting the mixture. I say adjust
the engine in it's normal configuration. This is how I do it before
heading to the vehicle smog inspections:

1> drive the car until hot.
2> turn off engine and disconnect O2 sensor from ECU but leave monitor
connected to sensor.
3>start engine and adjust AFM spring to get O2 output near center of
range. Use the allen socket screw to fine tune.

Of course do all this last, after timing and throttle body adjustments
per Bentley. As for CO, I guess I have always been lucky.

Good Luck and Drive Safely
Ken Lewis
86 Crewcab, 60 356 T-5
http://Neksiwel.20m.com/

Jeff Warner spoke thus....
....I temporarily installed your O2 sensor last night in the engine bay.
Very
nice little device.  I had to go back to your website (
http://neksiwel.20m.com/photo5.html ) this morning to discover that I was
in
fact looking at the gauge upside down.

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