Hi,
I have replied to your email.. the system is quite old now but is still very expensive and specialised equipment. Try ebay, all I have found is this old auction:
http://cgi.ebay.co.uk/Bosch-Diagnostics-Scan-Tool-engine-analyser-gas-bench_W0QQitemZ180074980771QQihZ008QQcategoryZ30921QQcmdZViewItem
I think you would be best to find a local garage with a similar system? Perhaps they will sell you it!
good luck
Russell