Short term fuel trim

[Hondatuner_1]

I currently am learning to tune and come across what I think may be a problem. My short term claims engine requires -21 fuel delivery. However, my engine starts around 12-13 and idles around 14.7 after ECT compensation settles. Therefore, I don’t understand as to reason why it would claim such amount. Please help me, thanks.

[Spunkster]

Has this been properly tuned on the dyno?

[Hondatuner_1]

Unfortunately no since no competitive tuners in area so decided to try to tune myself.

[Spunkster]

post the calibration as well as datalogs showing the issue.

[TTR]

If the tune is in closed loop and its pulling 21%, take 21% out of the map where your seeing the 21% rich. The short term trim should be zero. Or put in open loop and see how rich it actually is.