From the factory, fuel pressure drops off in boost compared to what it should be. Hence the oddly sloped injector flow rate table.
Matt.. you are mistaken here.. that boob had no idea what he was talking about.

Fuel pressure DOES NOT fall off from the factory... if it does then your fuel system went to ****.

Does anyone know where i can dl tinytuners?
You dont need it.

I think you need to do some MAF tuning.
After PE and IFR is adjusted....

Here is a log and my wb shows about 10.8 ish at wot
10.8 is pretty solid for a 3.4 car.. but I would wiggle PE up and down to see if the KR gets worse or better... leaner is probably not going to be the direction you want to head.