quite possible .
if you bought the car like it, you wouldnt know what your missing, or it could have got worse over time.
the fluttering can be caused by split diaphragm or orings and the air blowing past.
other sources are wastegate chatter, but ive never heard it, or seen it,
where as i have heard DV flutter.
OEM dv is approx £15 new. service kits for DV (once you found out if it has been changed, and what it is), should be no more than this.