Struggling to tune VE on 2011 2.4 Malibu

[CR500250R]

I am working on a stock 2011 2.4 Malibu with a E37 ECM. When the MAP hits .90 to .95 kPa or greater it goes lean. Like 10mv on the stock O2. This condition can happens right after a low throttle shift as you add throttle to continue gaining speed. Someone in here may just be able to tell me why that is happening, that would be great. If not, my question is: what's the best way to go about fixing this, given that there is no main VE table? What I have seen on the internet has not given me a good solution. I have swapped the MAF and MAP with known good parts and confirmed the fuel pressure is not changing when it goes lean. I will attach a log file of it happening, it starts around 00:00:11.850. Any help would be greatly appreciated! Also open to any constructive criticism on scanner setup or deductive reasoning.

Thanks
CR500250R