millivolts - a/f               
   -----------------
        930mV = 12.00 
        920mV = 12.25
        910mV = 12.50
        895mV = 12.85 
        880mV = 13.20
        450mV = 14.70
 
stock o2 sensor readings from atap or similar



labda numbers
 volts - a/f           
--------------         
 0.70v = 10.3          
 0.75v = 11.0           
 0.80v = 11.8            
 0.85v = 12.5            
 0.90v = 13.2            
 0.95v = 14.0             
 1.00v = 14.7
 1.05v = 15.4 
 1.10v = 16.2
 1.15v = 16.9