What does vapor lock look like in a data log?

[8aHemi]

I went to the track today for some roll racing, and had to sit in staging for like 20 mins.. I made a pass, noticed it was down like 10mph, checked the log and it was insanely lean, idk how it wasnt breaking up and idk how it didnt blow up. Anyway after checking everything over I couldnt find a good reason as to why it went lean. I noticed trims at idle were lean as well. I shut it off let it sit for an hour came back started it up and trims were in line, so I made another pass keeping an eye on the wideband this time around. Spot on.. Only thing I can think of is e85 vapor locking in the lines. The lines are like 2 inches from the header coming up to the rail, but Ive ran this car for over a year now and never had any issues like this.. It was 90 degrees out today and i usually dont take the car out in the heat with no AC.

first log is where it went lean, second log is good. Same tune file and ran an hour or so apart. Kinda worried about this situation lol.

howdidtsnotblowup.hpl121212.hpl

[edcmat-l1]

All those pids and you're missing the most important one for this problem. Injector on time.

[8aHemi]

Yeah I know. Was not expecting this issue lol. Fuel pressure pid is generic too just stays a constant value. I would think you would not have issues cooking the fuel if it?s flowing. I could understand if it was stagnant fuel in the line next to a header.. I pulled the relay for each pump individually and it did not go lean on trims at idle like it was before that pass so I?m pretty confident it?s not a pressure or pump issue.