Hondata

on +91 base calibration flash pro carb for 21' type r.

from the log, it get 2% knock retard at most. and once in 4% retard.
could it be the cold weather and the a/f ratio? everything seem normal.
anything I should be concern about?

For the FK2/FK8 'K.Retard' is not used; the individual cylinder knock retards 1 to 4 are used. 2 degrees knock retard is acceptable.
Fuel is about 4-5% rich, but that is not too bad. The short term trim needs to be a little negative on the FK2/FK8 otherwise the lambda can go into oscillation.