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Umm..no..more (archive)

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Posted by MattH on June 16, 2000 at 19:27:03:

In Reply to: Intriguing … a response for you posted by Mr Stealth on June 16, 2000 at 14:49:30:

The CPU bases its load measurment on the RPM and injector Pulse Width. There's no "resistor" that you're going to put in there. It doesn't read a load, it figures it out based on things like HFM and RPM and it's directional proportional t injector pulse.

People have been trying to spoof ODO's for 20+ years. Don't you think that the engineers at BMW have figured out how to make their system reasonably hack proof? I mean, yea you could go in there and re-write the code, if you could disassemble it and figure out what was going on. And if you could do that then you'd find something more constructive to do with your time than spoofing ODO's.

Oh, and yes, I am an Electrical Engineer.

But don't let me stop you. If you get caught then the guys who designed the ODO might hear about it and feel a little extra special about their jobs, even if just for a day. And that's a great thing for an engineer.. :-)

Cheers,
Matt

: I normally don’t reply to flamers but it this case I will due to that fact that your post has intrigued me…

: I can see you are either interested in electrical engineering or actively involved in the field as I am. If the CPU does read a calculated load it may be stored in a log as an error for later trouble shooting purposes. This could easily be countered by installing a resister with a load equal to the load represented by a zero Mph on the speedometer / odometer sensor within the circuit to the toggle when in the off position.





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