I'm not sure how to describe the noise, I personally didn't think it was really a bad thing, no codes are thrown or anything. A friend of mine (knows cars pretty damn well but not an audi person) thought the noise was out of the ordinary and was blaming the tune...The only problem is, sometimes you can trust him because he genuinely cares... sometimes he's just saying things to make me over think and make my car look bad (he had a bmw that I shat all over constantly so I deserve it) Basically, usually in the earlier gears, first - third well say, when I have it in sport/automanual and I am accelerating somewhat hard and I shift, the exhaust almost gives a deep ....almost fluttering pop? i guess would be the words.. I was looking at videos and some people had the same kind of noise. I just want to confirm it's normal before I let it go and turn into something bad. These videos are awful, I couldn't get the sound really on camera but you can sort of hear it. Usually it is much louder and worse than this, these are more for an idea. In person it stands out a lot more

https://www.youtube.com/watch?v=hFpezPBdXrY
https://www.youtube.com/watch?v=_1il6eGcdts