I'm pretty sure the gas is reaching it's boiling point. I don't know if it is happening in the line or at the fuel pump though, but I literally watched it starve. When the car has to idle for extended periods it'll start surging. On occaision it will die too. I really try to avoid having to drive in heavy traffic on hot days.

Hopefully, that will be a thing of the past. I just placed an order for an aluminum radiator, catch can (in case it does spit up again), and a pair of Dynamax Cyclone ceramic coated headers. That should make for some easier Texas summer driving.