I have exactly the same problem, I have a Gen4 10 it is saying about 15.9/100 on the dash also. I have the same setup PCV, 02 Optimizer, Akra and link pipe.
I downloaded the map closest to my setup on the PCV www and it seems to be running rich as hell ! Massive popping on overrun when your about to stop, Scares the crap out of cars at the lights !!
Just got to find time to get it dyno'd was planning on heading to dynoverx,
As an idea do people would people with the same setups be interested in sharing Maps to compare the difference, it would be even interesting just to look at it in the stand-alone software to compare tunings and get rider feedback. Human Auto TUNE
Happy to share myn when it is done properly !!