yes, if you want more bhp, you take from mid range grunt etc etc, the only way to get both is more displacement, blowers, gas that sort of thing or my fav.. webbers
you can change your power graph (on a dyno run) by simply changing the lenght of your inlet tract (which has been talked about on these forums in depth)
on mine I only have changed the breathing via exhaust and inlet but the change is noticable, I have yet to remap to take full advantage also.
I have actually lenghtened my inlet to provide more mid range pull as I rarely drive around on the limiter anymore.