Car sputtering and cutting power at WOT
 

As I approach 150k miles and 130k boosted miles on my car, I'm starting to see issues. I'm not sure if I have a vac leak but when I WOT my car, power is cut and the engine doesn't want to climb in rpms at random times. It just hangs at say, 4k or 5k rpm under WOT. It happens quite a bit. It's more pronounced on pump gas than e85. I'm thinking this could be the effect of a vacuum leak somewhere. I'm not sure what else can cause this.
Any one else experience such issues?

Vacuum leaks usually happen at low RPM, not high RPM. That is not a typical vacuum leak symptom

Failing fuel pump? Coil pack? Spark plug? Clogged injectors?

Perhaps failing MAP sensor? A lot of these OMNIs are shitting out on people lately.

What does your AFR look like when it happens, have you taken a log to see timing, engine load, boost when the issue happens? Is it particular to a single gear? etc..

+1 on the MAP sensor as my first thought.

+1 for the MAP sensor as well. There have been several reports of Omni MAP sensors failing, and the symptoms fit.

Let's see LTFT and STFT at idle, 2500 RPM and WOT

Thanks! I'll try to gather this info this weekend.

Clogged fuel filter?

I've attached some data logs. I don't know if they indicate anything. Basically I give the car some throttle and right before i let off the throttle is when the engine dragging starts happening. Basically the engine sounds like it's struggling and doesn't rev higher even with throttle. Not sure if it's a misfire or what. What's interesting, it's worse the lower the ethanol level. Basically the car performs better with higher E content and performs like crap on pump gas. This issue just started happening.
If anyone sees anything wrong,
Thanks

Your AFR and MAP is pretty wild, along with some fuel trims.

Replace your MAP, or test with a known MAP.

Interesting I'm experiencing the problem once and awhile these past about 3 months now. I have about 35k miles with less than 10k on boost (JRSC C38) on stock MAP. It's happened on 91 and e85. I can't figure it out.
This is a data log using Torque App over a month ago.
https://datazap.me/u/dru670/engine-s...17-18-19-20-21
Been meaning to do a data log with ecutek to have my tuner take a look at it.

Perhaps I'm misreading your post...but you are supercharged on the stock map sensor? The standard JRSC pulley makes more boost than the OEM sensor's range.