I found the following at:
http://www.dieselpage.com/art0898pf.htm
I particularly wanted to bring to your attention where it says:
"Electronics for in-line pumps - For in-line pumps Bosch offers system solutions in the form of electronic add-on modules or fully electronic controls. Idle control and driveability can be optimized with add-on modules. There are also solutions for future emission standards. The electronic start of injection control influences the mixture formation and combustion. Emissions of nitrogen oxides and unburned hydrocarbons are significantly reduced."

Tom - Do you think you can find out what this is talking about where it says... " add-on modules " ?
Danke,
Sam