Sounds a bit like the "flutter".
Try and google search "k04 Flutter" and you'll see just how many people have this. There has been many a debate whether it is infact compressor surge or the wastegate actuator not being strong enough to hold the high boost requests therefore opening and shutting. My car flutters all the time if you boot it in a higher gear at lower rpm (like Tim said).
Try and google search "k04 Flutter" and you'll see just how many people have this. There has been many a debate whether it is infact compressor surge or the wastegate actuator not being strong enough to hold the high boost requests therefore opening and shutting. My car flutters all the time if you boot it in a higher gear at lower rpm (like Tim said).
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