I have just spent a couple of hours doing some testing with my OBD setup and managed to get some data logged and graphed. This was just a trial run logging data from a short drive around the block and the data is pretty meaningless, but I just wanted to test the logging system out. I was also only logging at 10 second intervals due to the limitations of the software I was using. There is plenty of useful data available such as Load, IAT. MAF, TP, ignition advance, O2 sensors, fuel trim etc. so now that I know that the system is basically functional I will look at doing some proper tests.
Anyway here's the graph of the data.