As mentioned, a lot of variables can change spool even on the SAME turbo and same car! Some of my own findings. All data is rolling in third gear, straight road to attain boost threshold. Do note on most of these, the setup was not identical. My observations have been cams, intake manifold and presence of a CAI make a big difference on spool. I tried to remembber as much as I could since some of these aree from 8-12 years ago. All these were logged with a boost sensor in Link. I'm a data hoarder and log probably too much so i notice small changes easily.
2.0L, 8.3 C.R, 6 bolt. Otherwise healthy engine.
FP3065 35psi 5,000'ish, HKS 272s, stock intake (+300rpm on SMIM)
PTE6776 T4/0.68 30psi at 6,000ish, HKS 272/272, SMIM
PTEGT3582R T4/0.68 35psi at 5,000'ish BC 280s, stock IM (9.0 C.R. engine)
Holset HX40 (Mitsu housing) SMIM 35psi at 5,000'ish (Web stage 2s)
GT3076RLE (Mitsu, 520HP version) SMIM, Web stg2s 35psi at 4800'ish >>surprised me how laggy this was, had the spool of my old 35R with more than 100whp less power