I did a hard reset on the first night that it happened then drove it to work the next morning and had the same issue. Then drove it to the tuners shop where it has been for the last week getting the pipes done up as Well as waiting for the new headers to get coated. Once I get everything done we are going to run it and see it where we are. It don't really make sense to me that heat is the only cause but giving the fact it was cool out side in the morning to the canyon and really cool up in the mountains and did not have an issue until. I got to the freeway in the middle of the day when it was hot. I understand that others have had issues with the FPR. That would be my next guess if this don't help.