I just got my greddy kit on my 99 prelude and I also got the greddy type-s bov installed. When I boost and let go of the gas, it seems to flutter (compressor surge?), even after adjust the screw on the bov to the loosest setting.

So where to tap for vacuum source? Even at partial throttle (still in vacuum) and let off the gas, the fluttering noise is there. So is this compressor surge or it's just me?