Quote:
Originally Posted by Visconti
Dumping the ECU with non commercial tools is what you need to do.
You'll need to find someone that knows how to communicate with the ECUS.
After you have the raw data from the ECU, the RomRaider Community can help understand the data, locate maps etc.
They have a map editing program that can be used.
-John
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This is something I've been looking into for only a few days now, so please bear with me if there are a shit-ton of errors. This is more to spark some thinking in the community rather than something I'll ever do myself.
Anyways, the main ecu chips in the past were CPU, ROM and RAM all combined. And we only want access to the ROM, right? In the past, engine ecu's were dumped by basically removing the chip and using a dedicated hardware/software combination hooked up to a PC. Something to do with EPROM.
The data was probably simpler back then given memory limitations, and probably much easier to define. Either way someone figures the tables out. Great.
Then the chips were written with whatever the tuner decided, while out of the computer and put back in. Sounds like a tuning nightmare.
Now I'm not certain if this was all or varied by chip/ecu. There is also mention of soldering in a different board that had sockets for the factory chip as well as an EPROM. From the sounds of it the purpose if the board is to physically change the ROM location to the add-on EPROM.
Tuning is still a nightmare at this point. I think this brings us to the JET era of mail your ecu in and get it back 'tuned'.
The next (or even historically current) step was the use if emulator hard/software that could be plugged into the add-on EPROM socket and have a computer emulate the ROM. So finally real-time tuning, but you still had to burn and install a chip after you figured out the tune.
How am I doing with the history so far?
Hondata sounds similar to this point, but maybe a more advanced add-on board? I'll be researching a bit about them next.
Still miles away from OBD2 Port flashing...