Several years ago when i did not know how to dump the program directly from an ecu i had used posted dumps of stock nissan code and modified them . Subsequently i found some issues with those dumps and since then i have compiled a library of stock rom dumps from actual stock ecus that i come across. I record the part number and the eprom dump for future reference. Itis quite interesting how over the years nissan got more agressive with the stock tune.
Anyhow, these stock dumps are now the basis for all the tunes i sell. I have my own theories on tuning and i have no interest in tunes by other people. Interesting it has come to my attention that some people took advantage of my one price for multiple reflashes and have started selling copies of my tunes. Unfortunately there is nothing i can do about it. Instead i can say that my tunes are never static, i keep learning and incorporate what i learn into my current tunes.