What is the highest safe boost on a non-intercooled 6.5? I have been running about 10# for the past year or so, but I have been told to run higher boost levels to help bring down my EGT numbers(1100° Post-turbo).
Is this the case or am I asking for trouble(218,000 miles)?

About the most people recomend safely would be 12. I have been runing 15psi for 2 years now with no problems.

I go with My ECM burner recomendations of 12psi in the summer, and in the winter I like 14-15psi and so does my truck.