I don't suppose anyone can tell me what A/F ratio 0.600 volts from the oxygen sensor corresponds to? I know the range is 0.900-0.100 and it's rich, but I'm curious about what ratios these voltages actually correspond to.

 

pretty close to 14.7:1

http://www.gadgetseller.com/gauges/techinfo.htm

 

Thanks for the info. Can anyone with a stock q-jet tell me what their oxygen sensor reads when their MCS is unplugged, and what their normal range is for idle? I get 0.600 volts when it's unplugged and 0.300-0.400 at idle. I'm thinking I might be running a little too lean. I dunno though, just curious.