Alright fellas, just received my Turbo XS hybrid blow off valve from lestat (thanks again man) and he only included 2 washers. I put it on the car and when I free rev it while the car is just sitting, it flutters under 4k rpm, but when I floor it and let off it makes the nice orgasmic psssssssst. Sounds amazing. BUTTTT....I take the car down the road for a spin and what do I hear? Nothing but flutter and compressor surge. No psst at all, just flutter no matter what rpm I let off the gas in it...whether 3k or 6k. Anyone know what this is happening? Do I need to add 2 washers to it and go to 4 washers total? Would this get rid of the extreme amounts of flutter? I know under normal operation and normal shifting, at low rpms, it is supposed to flutter because its recirculating. But when WOT and letting off, it should make the distinct psst. Please help guys!!!