after my bov goes off and if i let it just roll in gear but clutch pressed in..i can hear a whistle..like a human whistle..do a whistle real quick and thats probably how it sounds like..but back to topic..yea and when i rev it in neutral a little i'd just *whistle whistle whistle whistle whistle* (no pause)..is there any problem in that or will that be ok? im using the Greddy Type S bov right now..im not even shure where to put the hard/soft nut..so i just leave it in the middle.=P