You are super lean, the narrow band voltages should be around 0.88-0.92 volts under PE enrichment.
Your airmass(g) is very high (forced induction numbers) like you have been raising the MAF with no result, something odd going on, looks like low fuel delivery. Have you checked the basics, fuel pressure under load at revs (not idle), plugs (as a misfire will look lean in 02 content).
Airmass(g) should be about 0.8. Id start with the stock MAF curve, check fuel pressure under full noise, it should hold steady 58 psi, back off if it drops.
Attachment 116892