I'm bored in work and have been thinking about random stuff

I was wondering that when you live map a cosworth on air injectors, is it possible to have exactly what boost you want, at what revs? (obviously depending on if the turbo can produce it)

What i mean by that is can you create a really smooth boost curve as such? Eliminate boost spikes etc, therefore making the car drive more smoothly? Just like a Focus ST - if you watch the boost gauge on those when flat out, they don't really spike like a cosworth, they kind of hold a constant psi through most of the rev range?

Probably a really crap description lol