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Your STFT are "normal" because they have adapted to the new "norm" of the LTFT values. Most likely you have a incorrect MAF signal, intake air leak, or improper fuel pressure. You can be fairly positive its not a fuel injector or exhaust leak as it appears both banks are seeing the increase in LTFT.
If you have a fuel pressure gauge and adapter for a schrader valve start with fuel pressure as its easy and cheap. Next do the normal testing for faulty AOS (which can be found all over this forum), and lastly the MAF testing.
You'll probably end up replacing the MAF and or the AOS and this problem will be resolved.
On a side note it seems like that is a high number for the MAF reading...I remember mine being ~11g/s but I might be thinking of something else.
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2001 Boxster S 6speed- weekend warrior
2015 Explorer Sport- New DD
2011 Taurus SHO- Sold
2010 CBR1000RR- Sold
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