So I'm pretty new to learning how to tune, so I ordered a tune from J-Fonz. I flashed it to my car with nefmoto, and then decided to make some changes to the tune because I want to learn how and wanted to start off easy. I used the 8D0907551M-20120516.xdf and made some changes to the tune through tunerpro. I have a 2001 a6 2.7t apb engine with a tiptronic. I just wanted to know if I used the correct files to make the tune before I reflash it. Sorry if i posted this in the wrong spot. Thanks.

I was just trying to correct the fuel consumption on the display since I've already ran it dry because it said I had 100 miles left. I have the file from my car and loaded it as a .bin, but it didn't load a .xdf. I downloaded the .xdf from the stock tune for my car. I definitely feel like I'm doing this all wrong and just want to be sure that I'm not going to load something to the ecu and then brick it because I did it wrong. Thank you