I dont quite get the point in speccing a build to only run 1 bar of boost? Surely thats the wrong turbo? Considering most turbo's of the size needed to make that power can operate efficiently at >2.0 bar, it seems silly to have such a large turbo that only 1 bar of boost is needed?

Would make more sense to have a smaller turbo (for more response) and more boost surely? Maybe it's just my way of looking at it.

What turbo are you referring to by the way? Would have to be a GT35 at least I'd have thought for that power.