On the topic of alerts, I realised that an AFR alert is only useful for a boosted car if the car is in boost. AFR regularly goes to full lean on deceleration, so a lean AFR alert with no other parameters is not useful.
It would be very helpful to have an alert which was tuneable to say:
IF Boost <Greater than> X AND AFR <Leaner than> Y THEN Alert
Having the X and Y values configurable means that I can set the alert for a value which is valid for the vehicle. Some cars are much more knock limited than others and need even richer mixtures. My car in particular is tuned to about 11.2:1 on boost but it also depends on the actual boost level. Some cars are fine at 12:1 on full boost.