Hi guys, i had a long ride in my S3 yesterday up to birmingham and back from london and i noticed an issue which was when driving at 70/80MPH & in gears 5 or 6, when i put my foot down the revs would jump from lets say 3K revs up too 4K. the engine wouldn't pick up then it would jump back down too 3K and then take off! Its quite noticeable and I'm worried it could be too do with the turbo? (I'm a complete amateur when it comes too mechanics) any help as too what may be up would be appreciated. thank you.