I just melted my turn signal on my trip to Moab, UT over the 4th of July weekend. I think it was the combination of the 112* heat going through the Mojave desert and the exhaust heat which did it in. I took a trip up to the Sierra's in early spring and didn't have the problem. My guess is because of the lower ambient temperatures. Thank God I had a roll of Gorilla Tape in my tool kit. I wonder if remapping the Fi would stop this problem. Richening the mixture should reduce exhaust temp. Any opinions on this would help.