There's no refunds, or break cuts on Digital tuning files. Once a file is written, there's no way of refunding payment. We are willing to work with the customer to correct files or edit files where needed. Once the file is modified by someone else, it's no longer the duty of 747garage to correct any issues with the tune. If a customer decides to return after a having another party work on the tune, the customer will be considered a new customer requiring a NEW TUNE at full price.