Modifying OBD-II systems

[xxalexx at ix.netcom.com]

There was a rumor on IATN web forum that EPA was going to
require all manuf. post there codes on the web to provide the
ability for independent techs. to service and reprogram.  Proposed
ruling this summer.  The Clean Air Act does require mauf. to release 
all diagnostic data, which currently the bare minimum in manuals. 
alex   
> I'd imagine that there are some aftermarket folks that can change any
> parameter they want.   All, it takes is time, and money.
>    I've even heard rumors, of a gm document being leaked out..
> So far thou, little has been public domained, since it is so new, and not
> many people are working on it yet.
>   As time passes, I'm sure more will come to light.
> How they are handling DTCs so far is anyone's quess
> Bruce
> 
> > And are these 'specialists' able to do much with them?  I know that GM
> > won't give up the source (over 1000 pages I hear) even to the specialists.
> > Faking out the sensors is MUCH more difficult with OBD-II, since each
> > sensor reading is independantly verified by some other method.  Are these
> > 'specialists' bypassing the OBD-II requirements making the vehicles
> > non-compliant?  Or have they made the huge investment in reverse
> > engineering the code? Any ideas here would be appreciated.
> 
> > bs
>  >>  What do the guys with new cars do when
> > >> they hot-rod them?  Stop participating in the program?
> > >
> > >Most so far have had to send them to folks that specialize in them.
> > >Bruce
> >
> >
> >
> 
> 
>