Quick Lambda Function
When Q is used on the Fuel Main table, the function performed is a Quick Lambda.
A Quick Lambda function, when used live (that is, live data is not paused), takes the single site closest to the current running engine location, and places that site's details in the Quick Lambda window, for example:

M1 Tune will then retrieve the Fuel Aim value for this site, and the current Lambda value.
To perform the Quick Lambda on this site, review the information and click OK.
This same Quick Lambda function also works with recorded data. See Dyno Tuning with M1 Tune

