Quote Originally Posted by GTPpower View Post
Probably not normal. 15.1 is common, but 13.9 is pretty rich. Maybe your narrowband o2 is bad since your trims are at zero.
Did a quick data log, narrowband seems to be responding like it should.

Made a quiick little video.

https://www.youtube.com/watch?v=SYxDAvMSFXo