Idle speed control, oxygen sensor off-idle, and oxygen sensor idle adaptions are all supposed to take up to +/-100%.
And these are all of the/the only "documented" continuously adaptable engine-related adaptions for R3 2,5L.
Some of them can be monitored from TuneECU sensors tab, but their naming in TuneECU are not clear enough for me to understand if they are an adaption range or status (first would be value adaption factor from baseline; second would be a value between 0 and 100 telling how well adapted the value is to current conditions, 0 being fully adapted and 100 not at all).
That's a f*g pain not to have the real Triumph Diagnostic Tool to play with, I just love monitoring and understanding things, I would still pay the dealer for a mere oil change