[QUOTE=mmasse;3348274]Ok, today I read the info on my Stock EPROm in order to be able to compare with my two Performance Chips: Cyntex and C-Tune.
My first BIG surprise: The Cyntex chip is IDENTICAL to the Stock chip. No changes whatsoever!!! I felt really pissed off about this. It seems that they were just copying the Stock EPROM and reselling as Performance Chip!!! They didn't even change one bit of info. This seems not only unethical but kind of stupid to me!. See pic below of the two compared chips.
I will keep going with my research. I will greatly appreciate any input on my question about. any of the experts on this: Steve, Chris B, maybe?
I found the same here in Italy. Some tuners resell the stock chip as it was modified (among this a really famous italian BMW tuner). In same cases they resell the entire ECU saying it is modified. The eprom market is full of cheaters.
If it can help you you should see this link
http://apavlov.club.fr/motronic/ml31/ml31.html