Hondata

hooked up plx sm afr just like the diagram on http://www.hondata.com/techplxwiring.html. removed resistors r136 and r138. got good readings from plx gauge and smanager for a while until i try to calibrate the air fuel readings to my plx gauge. i went to parameters, voltage/lambda conversion table and i cant get the part that says lambda to change to Air/fuel. i also tried putting 10 and 20 in the lambda conversion table but its a no go. numbers automatically changes to 0.10 and 0.5. I already changed the sensor from Lambda to Air/fuel. am i missing something?

-Running windows vista
-96 civic hatch w/ obd2a to obd1 conversion harness
-p28 w/s300, s2 mani/70mm tb, dc headers 2 1/4 5 zigen exh system

Settings --->Units---->Lambda Unit----> select Air Fuel Ratio

thanks. got it now.