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.