I imagine that a freer flowing exhaust will cool the puppy down as well, particularly at that engine-header connection. Or at least I hope so after just performing a bafflectomy.
Lots of little things that add up to big improvements in performance and longevity.
not necessarily, less back pressure actually allows heat to flow faster past the exhaust valves creating hotter exhaust. Both input and out put are inter-related, hence the need to recalibrate the ECU. In the old days we had to re-jet the carbs when we made major changes in the exhaust. There really is a ying and yang about all of this