How different the I Bus in E31 is compared to the new models? As far as I know E31 was the first BMW to have a CAN (one of the first ever?).
Is it as easy to access and where are the access points? The new cars have them in several places, like in the trunk and under the bonnet.
The reason why I'm asking is that I'd like to interface it with my PC in the car so that I could display some of the information that OBC does as the PC's display fully covers it and it would be nice to have all the relevant information visible on one display.