How to calculate A/F ratio?

[HTA A4]

I think I'm running rich up top and are getting some fuel cuts... So I need to figure my air fuel ratio. Thanks

[A4ringedONE8T]

Lamda from 031 x 14.7

[HTA A4]

Thank yooouuu!

[A4ringedONE8T]

No prob

[HTA A4]

Now, I'm going to go watch your video again and watch you A/F the whole time

[A4ringedONE8T]

In boost its 11.9-12.1 on my setup

REVO software has a target of .85 (12.5). When in boost your requested should always be .85 As the car starts to spool you will see it go from stoich 1.00 (14.7) and by the time you have hit peak boost, it should be near its target. With your setup actual lamda in boost should be .836 or .85, never leaner (higher than .85)