but it >wouldn't be able to keep >the higher amounts of boost >in the manifold at high >rpms, since it doesn't flow >as much air.
You just contradicted yourself! not to rag on you or anything but different size turbo do flow different amount "CFM" therefore 10psi on a t25 turbo is not the same as 10psi on a t4 turbo. You do have the right idea about the rpm's but that is why bigger turbos make more HP @ the same boost setting.
