What do you mean by flutter?
I hear the BOV going off much like the stocker used to.
A sort of "turkey gobble" if I feather the gas pedal after getting on it a bit.
A a sharp WOOP! when going WOT and suddenly getting off the throttle.
Basically, it doesn't leak now when I boost leak test and it sure drives a hell of alot better, even on 91-octane!
