I don't want a ready file, I will learn do this by myself.
Any tips?
Use the search button on the main page to locate all posts about this...have been discussed a lot.
Read the FR for further understanding.
I could send the org and/or tuned files also.
The car is a Audi A4 B8 2009 179hp (CDNB) with MED17.1
Now why you need to send your original file or modified file if you don`t need to get it done by another person??