I was just wondering if anyone know where the fuel map or where the calibrations are store on the EVO ECU. When tuning where is the new information written to?

I want to see if something similar to hondata can be use where you swap out the EEPROM for different map instead of getting a new ECU.

I'm not bad at soldering and will remove the IC component from the ECU and solder a socket in order to remove the IC easily. I have a part programmer/boot loader at work where I can dump the information from the IC or program a .s19 or hex file to a blank IC as well.

Just wondering if this was possible and if it was pursued yet.

Thks.

 

From my understanding the data requires very specialized equipment to decode as it is all 32 bit

 

Not sure what you mean but if the calibration is store on the EEPROM (electrically erasebale) chip I can dump all the data store in there and reprogram it on another blank EE chip. With the equipment you have I'm not sure if you can write to all or only a certain area or address of the EEPROM. Also when you save a calibration not sure if all the data is being save or only certain data is save.

For example:

I take my current EEPROM chip out and get the data store in it and save it (.s19 or hex file). Program the same file to a blank EEPROM (assuming this is where all the time, fuel cal is store) and now I have two. Same idea with using two ECU with different map but now it's with the EEPROM IC instead of the ECU.

 

This subject is one that has little or no interest for me as we already have purhchased a flashing machine which allows us to do exactly what you are trying to do.

Also - I think people with the skill to solder and resolder chips is few and far between

Good luck though on your quest !

 

Check out http://dsmlink.com/faq.html and see if they know anything. Thats a process that was done with the DSMs.

 

I'm not trying to cause any pain. I just think that if this works it will be better then sending an ECU out to be flash. I would rather send a blank chip to flash instead of an ECU. This could be more business for flashes also.

 

Thanks and I think it's a neat process if it can be done.

 

Speaking from a reliability stand point - I have done about 500 ecu flashes throuhgh the mail and over 350 in person. To date ONLY ONE ecu has failed and in that case I suspect rough treatment by fed ex. Although it is a slight pain to send in the ecu to get it flashed - - I am not really interested in trying to start taking apart circuit boards and having customers re-assemble them.

Some of the older school DSM ecus need to have flashable memory boards attached to them and JUST the installation cahrge and chip costs more than our entire tuned ecu costs

Thanks for your ideas though

 

Hmmm...

Very interesting...

 

NP and it's not a matter of reliability but convience. Just wanted to point the idea out that's all. You can mod just one ECU (base) and then program different chips with different maps and then just sell the chip depending on what each customer want. Each customer will need to do thier own soldering of course.

Oh well.