Mind you, if you have studs, you can run more boost. So you can run a turbo that would otherwise require a wastegate, without one.
This is why R&D turbos don't always come with a wastegate... because you can just let the boost build without needing to limit it.
Note that I run my wastegated Banks and Factory turbo with the wastegate disconnected; they won't push more than about 15-ish with a stock IP, and I have been able to run that without studs.
Edit:
Also, train yourself to use higher revs when you want power(2k-3k range). Once you add an IP that isn't having trouble pushing fuel higher up, you'll just plain make more power in that range than anything below it, unless you have a tiny turbo and are choking off the engine higher up.
Lets say you manage 6 psi at 1600. You'll have at least 12 at 2400, and if you can fuel to match, will make more torque up there. Even at the same torque, you'll be making 50% more power at 2400 than 1600.