Does anyone else get turbo flutter when they rev the engine in quick succession? if i sit in neutral blip the throttle it dumps correctly but if i quickly blip it again it flutters really bad. Ive got a rev d Diverter valve in due to the stage 2 map. Is it worth going to a rev G?

Cheers

Is the DV moving freely? Sometimes they can get stuck or don't move smoothly

Sure it's not wastegate flutter?

I Managed to get a quick video of the noise, only seems to do it if i blip the throttle twice in quick succession

Check your DV plug connections and make sure plug is on properly.