VFORCEJOHN
Husqvarna
AA Class
Finally got the balls up to take the ECU on the bench and get this done. I was always fearful of locking it out and having a lawn ornament.
Been a few years of Shoud I dare or should I not. I said hell with it. 3 hours later. I accessed diagnstic mode 2 and the ecu replied. it was dumping out all its data. Same protocols as reading a ford Airbag module.
It worked. I have the EEprom info and the Infineon tricore Map data. so now, I can get more daring knowing I have a reliable backup.
Im going to finish decompiling all the info. the main sector of the data file is only 512kb, the last 320kb of data sector is all zeros, blank checksum areas and key data are easy to find. the tune sector is very small and fairly basic. laid out very similar to a mid 2000s Bosch. plus not much to convert as the fctoring is mostly Dec x .1 and all in 8/16 bit strings. Nothing compared to todays Ecus with 6500KB and every factor is some goofy caculation.
This should be fairly simple to tune out.
I'll post up some of the maps when I get it all squared away. Looking at what I got done so far. no wonder its lame and stalls on the low end.
I own my own dyno for the past 20 years as well. so I'll spend some quality time educating the engine what I want it to do.
we shall see where this leads us to.
Just figured Id let you fellas know it is possible, and you do not even have to open the ECU case.
Figure, someone had to do this eventually. Now. its been done
Been a few years of Shoud I dare or should I not. I said hell with it. 3 hours later. I accessed diagnstic mode 2 and the ecu replied. it was dumping out all its data. Same protocols as reading a ford Airbag module.
It worked. I have the EEprom info and the Infineon tricore Map data. so now, I can get more daring knowing I have a reliable backup.
Im going to finish decompiling all the info. the main sector of the data file is only 512kb, the last 320kb of data sector is all zeros, blank checksum areas and key data are easy to find. the tune sector is very small and fairly basic. laid out very similar to a mid 2000s Bosch. plus not much to convert as the fctoring is mostly Dec x .1 and all in 8/16 bit strings. Nothing compared to todays Ecus with 6500KB and every factor is some goofy caculation.
This should be fairly simple to tune out.
I'll post up some of the maps when I get it all squared away. Looking at what I got done so far. no wonder its lame and stalls on the low end.
I own my own dyno for the past 20 years as well. so I'll spend some quality time educating the engine what I want it to do.
we shall see where this leads us to.
Just figured Id let you fellas know it is possible, and you do not even have to open the ECU case.
Figure, someone had to do this eventually. Now. its been done