7,35 - 22,39 AFR for 0-5V gives a=3,01 b=7,35 - it's for AFR
If you would like to have lamba just select in settings -> advanced -> afr/lambda -> select lambda a=0,204 b=0,5 . You can calibrate b (e.g. 0,49 or 0,51) if you have offset voltage on wires.
You will need external shiftlight - dig out user is only for low frequency signal control (1Hz per second) and RPM based on injector is also slow.