Originally Posted by Topend
I think New members should get one freebee post even if EVERYBODY ELSE already knows right? Ok here is mine....whats the difference between OBD-I and OBD-II? Is it the same as BMW's OBD's cause if it is than I already know and it sucks since im #2. thanks!
P.S. I've looked around at different forum-based sites and chose yours because for the last two weeks ive been able to find out answers simply by using the search tool. Hats off to your knowledge.
Welcome to the board. :cheers:
The specific differences between OBD-1 and OBD-2 ECU systems varies by manufacturer. But the additional requirements were developed by the federal government.
In a nutshell, the addtional requirements that begat the development of OBD-2 were developed to:
a) standardize the datalogging protocol and hardware.
b) incorporate additional sensors to more accurately monitor the emissions control system.
c) ruin the lives of automotive enthusiasts whilst providing an unending revenue stream for mechanics.
