I just wasted a few hours looking for all the info i could find on Bosch IDI injectors. DN_S stamps, 0 434 250 xxx part numbers. i excluded some of the DN0S parts that are only available from zexel, and excluded DN0S stamps that correspond to a part number that doesn't start with 0 434 250.
And i included application data where available.
Sometimes one injector is used in different injection bodies by different manufacturers at different cracking pressures. Go figger.
Spreadsheet here:
http://goo.gl/xitpGAI'd be glad to add to it as we find more info.