Just so you guys know, I haven't forgotten about this thread, but I have been busy. I just completed my first baseline runs on the dyno with my new motor and pulled 233 hp and 343 fpt on a 12V SOHC FWD motor
Since I last wrote in this thread I have also taken on the job of turbo repair at a local shop. Any rebuilds I do are all done using a Heins TC3 balancer and all bearings and seals are brand new. I can warranty every turbo that goes out the door for a full year.
http://www.turbomasters.net
As far as your project, I have some other links I can provide as far as knock control and engine management, unfortunately my dinner break at work is over.
I'll try to post some more this weekend and get you some info.
As far as widebands, check into a PLX made by PLX Devices or a a ZT2 made by Zeitronix. Both of which are top quality items and pretty much the best value for the dollar that you can get for A/F ratio analysis.
I'm still working on the compressor map and the links that you provided will help a great deal, I just have to find time to sit down and crunch numbers. I have a coupel additional info files that will help me figure out various pressure ratios acrossed the board. I should be able to find a guesstimate compressor map for choke and surge as well as a guesstimate efficiency table.
EDIT: Check this unit out for knock control rather than an overly expensive MSD BTM which retards timing based on boost when it's already too late:
http://www.jandssafeguard.com/