hey, i have a 56 plate 2.0 TFSI a3 quattro s-line last few days the car has been revving when im stationary and tonight sounded pretty lumpy, revs go up then down then up like im revving it, have a vid if needed, seen this before on a thread but cant find it, aslo keeps flat spotting and then all of a sudden pulls at like 4.5/5k revvs dont know if this is linked? thanks