Well did 3 pulls to check out my A/F ratio. The reading is from my 3rd O2 bung that I put in. The tuner said -1 point from the graph to be correct. There are 2 graphs before/after. I just want how is my A/F ratio for the before. I think it's not that bad and don't need to get a reflash. All advice are welcome. TIA.
The Red grapha is the before

 

Seems a little lean to me.
The ideal spot is 12.8 to 13.2
It didn't richen up until the end of the pull

 

Is the blue line the "after"?? I am assuming it is...since its run #17.

 

Come on Sharif you of all people should know how to read a DD graph. lol

Looks ok, not great. What are you using to adjust fuel?

 

Was using S-AFC II but after couple days, it started to throw knocks like crazy. So it's the ECU that's trying to compensated any fuel changes. The tuner can't do anything about it so I took it off and sold it