High AFV on XB12SS Long

[John Vreede]

Hi
A mate brought his 2006 XB12SS Long to my place, and we ran ECMDroid via Buelltooth on it to see what it was doing.
Apart from a K&N air filter, it is a bog standard Japanese spec bike (BUEIC ECM), still running the muffler valve, with 12000mi on it.
It runs very well, subjectively engine power, smoothness and ridability feel very like my richen-up Uly.
However the data channels show (on live data when idling):
RPM 1237
TPD 6.0deg
EGO correction 126.9%
AFV 126.9%
The AFV and EGO corr. had the same values after he came in from a 20mi ride as well.
The idle rpm is a bit high and I suppose that would bring the TPD down to a reasonable number if adjusted, but my query is with the AFV
From this number I gather the ECM is richening the fueling for a sensed lean condition, presumably the K&N airfilter.
My questions are:
Is this how high you'd expect the AFV to go on just an K&N airfilter change?
Or is there something else going on?
Any issue with leaving it like this?
Thx - jv