Terrible bogging, no codes*

[truegearhead]

I spent the morning over at a Porsche Specialist and between two techs and a another Boxster to compare values to no one has any ideas. I could have bought a Boxster for what I've spent on resolving this problem. Frustrations starting to come through. For some reason the MAF reading and predictive table values are off from one another, but the MAF appears to be working correctly and showing correct values.

Symptoms
-bogs when hot, the hotter it gets the more it bogs
-runs great with the maf unplugged
-no codes (verified by Porsche shop)
-engine temp correct (verified by Porsche shop)
-maf reading and predicted table reading are off
-tps 82% at full throttle..odd


Parts replaced this week (all oem)
-maf
-O2 sensors (front)
-fuel filter
-air filter


Things I've checked
-fuel pressure 3.1 bar (correct)
-vacuum leaks sprayed everything down with carb cleaner.


Something is making the car adjust its MAF values away from the predictive values. But all systems seems to be working properly.