i just install a The new hks and for some reason it flutter. tississsiss sound at low rpm 3000k and high rpm 6000k. and is not making the woosh sound. any suggestion to why? i have read on this and other forum stating that it is normal for hks but ive seen the same hks bov on other car making the sooosh sound. any help would be great. it idle vaccum at 20-22. While driving it seems like it is boosting when it is still below the 0. any help would be great. i have the vaccum line for the bov and wastegate to its own bigger vaccum and boost gauge on the smaller vaccum. it is on a b18.