Quote Originally Posted by Tre-Cool View Post
Anyway they are working again now but it was a WTF is going on moment for a while. (I even have a log from a car where lambda is changing but afr is at 0 jumping up to 25, 6 etc)
In one of the RC versions we added the option to specify a stoich value that is used to convert from Lambda (i.e. the value from the WO2) into AFR. It had a bug that caused the stoichiometric value to default to 0 instead of 14.7 IT was corrected in a later firmware version.

You should check that the stoich value is set correctly in the settings for FlashScan for the fuel you are using - as shown below:

Click image for larger version.  Name: wo2stoich.png  Views: 448  Size: 148.0 KB  ID: 12889

If it is/was set to 0 (i.e. has never been set by you) it will now correctly default to, and show up in the settings, as to 14.7 instead of 0.

Regards
Paul