That's what some buddies and I were thinking, sorta like vapor lock? I'll look into a wide band.
in the meantime I posted a full video of the entire session for more data.
https://www.youtube.com/watch?v=xJm_PylH4uE
1:22 min - Squirrel
2:47 min - first sign of issue
3:09 min - yells at car
4:52 min - cooling in the pits
6:15 min - Sings "I dont understand why you do this to me car"
8:47 min - back on the track
11:38 min - car shows sign of issue