If you want flutters then run no blow of valves (block off where the BOVs were), or do the one you have on there up heaps tight. You also will need to have pod filters as you just wont hear it through the panel filter.
Been covered heaps, but flutters is basically air going back the other way and your turbo chopping it up. So really the air is going back out you filter (again pod filters are louder). With a properly working BOV installed however, the air does not reverse and go back through the turbo(s), rather it either gets dumped straight to atmo (usually illegal) or it gets recirced back into the plastic air pipe between air filter and turbo (the legal way, and the stock way of doing it).
If you wanna hear it, go buy pod filters and block off your BOVs.
Warning: There's debatable turbo wear from flutter (lets not get into this -> search)
Warning: your car may run crap/stall....some do, some dont.