370Z CAN Bus Proprietary PID's

SouthArk370Z

Not silly at all.

The theft-deterrent idea should be pretty easy to implement with a relay in the push button or starter circuits.

You should be able to come up with a "valet mode", using some switch (or combination) to limit RPM. I'm not sure how one would limit RPM, but you seem to have enough access via CAN to do it, if it's possible.*

The possibilities are endless!



One thing that I've wanted on my 7AT is to have the current gear displayed on the dash in automatic mode, as it does when in manual mode. Not sure how the dash handles it, so it may not be possible.

*Edit: It sounds to me that what you are working on is basically a "dumb" tuner. If you know the right address to poke data into, you should be able to do everything the tuning software does, albeit without the benefit of the reverse-engineering done to identify all the "good" addresses.

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Brad370

The ECM sends the current gear to the dash repeatedly (every 55ms on my manual Z). So the problem is that even though you could send out messages disguised to look like the message from the ECU to trick it into displaying the current gear, it would immediately be replaced with the next message from the actual ECU.

Jordo!

Wouldn't that message be the next gear you are in, or do you mean it would keep cycling between "D" and a numeric gear value?

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Brad370

I believe SouthArk370Z wants to be able to replaced the 'D' with the actual numeric gear value. But I think you would be in a tug-of-war with the ECU and the display might be unreadable because it would bounce back and forth between D and the gear number. Or it might cause errors.