Rain and a wet track made for a very interesting time to learn the track for all our drivers. We sent out our fastest/most experienced driver for the first stint who quickly mentioned that grip levels out there were very low. The two hours were littered with cars exiting turn 17 and hitting the slick drag strip lines near start/finish and crashing into the walls. 4-5 cars ended up completely totaled here so we made sure all our drivers knew to stay in the middle line or get off throttle if needed. Typically, we can only make ~1:40 stints due to fuel but with the rain and cautions we were able to run a full 2 hours. Our second and third drivers finished their stints with a few offs, spins, and a very close slide near the wall. We were around the top 5 in class when it was time for my stint with only an hour left in the race. Pit stop goes well and everything is good until I exit our pit stall and the engine will barely run. I’m able to limp it back to our paddock where we begin to diagnose the issue. It’s extremely lean and won’t run. It was raining pretty good during our pit stop when we had the hood up so we decided it was either the fuel we put in or something shorted out in the rain. We swapped the fuel pump, checked fuel pressure, checked injectors, etc without finding the cause. I decided that we just needed more fuel for some reason, so I tuned the engine to basically have 100% duty cycle at WOT to get to our AFR targets and we had a running car before the Sunday race. I took some logs and it seemed passable.