Race fuel with O2 or wide band sensors

[Bruce Witherspoon]

Originally Posted by west coast

For tuning do you just take out the wide band sensor after tuning so the leaded fuel dont kill it. What about O2 sensor with leaded fuel how long before they are killed. Does any body run unleaded race fuels like VP C10? Have heard they dont pass fuel check very well anybody have any knowlegde with unleaded race fuels?

I have run the same O2 sensor for an extended period of time without removing it. (years) I have virtually no change in the A/F ratio using VP C12.