First off, i just recently purchased my e34 so........... Okay, is the OBC the display where the speedometer is or is it the system adjacent to the radio. If it is the system adjacent to the radio, i only have the option to see the time, date, and temp. Do i have the cheap option! I also have a 95, so did they change the look of the obc from year to year or what? I DONT KNOW? because i wanted to access the hidden features. (If i got any)! HELP A BROTHA OUT! LOL