This is why when I sell my car one day (if I do), I will be providing all the Ecutek information to the buyer along with the most up to date tune file and the stock rom to pass inspection. I feel any good car owner and reputable seller would do the same, one enthusiast to another.
Honestly OP, if you have Ecutek on there and you know it for sure, I suggest what @
moto-mike said.
Find yourself an Ecutek cable and you can use a laptop to do logging and flashing.