Random fuel rail preassure spike to 90,000psi

Hi guys, im baffled on this. My car is tuned on E85 along with a identicle car and setup on E85 tuned by a different tuner. Both logs show the random HPFP/ fuel rail pressure spikeAttachment 90731Attachment 90730s to 90,000 psi for a fraction of a second. Take a look at the logs to see what i am talking about and let me know your thoughts.

skip to 1:55 on LOG file to view what im talking about, happens multiple times, and worse on my buddys car, toakss file. You can see it 2 times soon as you open his file, around the 2 second mark.