Originally Posted by 2SS45th
Will heat increase pressure, yes. Does boost equal heat? Not necessarily. I wouldn't be worried about how much boost it takes to make x amount of horsepower, because the cylinder pressure will be the same nonetheless.
No, but more boost will lead to a higher chances of knock before MBT is reached.
Any combo that can achieve xyz power level using a lower boost pressure is ALWAYS the safer and more reliable setup.
The only thing that often prevents using compressors large enough to achieve it, is spool. So it's always a compromise.