I think any OBD11 scanner with data logging capabilities can watch the MAF voltage.
We need AFR's my friend, get me a video of your AFR while the car is doing this.
Make a 10$ smoke tester, smoke test it.
Once you know you have no Vacuum leaks, move onto the next thing.
Next thing is to check and make sure you BOV are working properly,line has come off, fully closing Etc..
Im assuming you've checked for cracked manifolds? (smoke test will show this)
Could be a waste gate problem too. Again smoke test will tell us.
If you build the smoke tester I will come
build one, sykpe me or facetime me, Ill run you through it, and try to Diagnosis it for you.