searching for compressor maps

[Alan Pritchard]

Hi guys, getting into more turbo research at the moment. I am looking for
turbo information (more specifically, compressor maps) for the turbo as
fitted to the 2l 5cyl turbo diesel that audi produced. The app is for a low
pressure conversion (after efi) for my 2.2 90q. references to various info
sources have told me that it should be possible on my 9.6:1 (ish) cr engine.
A graham bells book on forced induction shows various cr's with max
recommended pressures and it suggests to me that 5-8 psi is obtainable with
suitable intercooling. Although his statement reads "I do not advocate the
use of forced induction on vehicles with a cr higher than 9.2:1". But he
does however show an example on a 10.2:1 engine (which I know is achievable
with the various low pressure systems available for Hondas). So my next step
is to try and work out what sort of efficiency ranges I would be running on
a td turbo. I know I am not going to be breaking any landspeed records, but
the goal is to try and maintain good power throughout the rev range. And not
raise my insurance premium by too much.
Many thanks.