Charles, what kind of BOV are you using? (if there are pictures or videos, I cant' see them at work...)
Turbosmart (not sure which model) Think it's this one without the cone.
http://www.3sx.com/store/comersus_viewItemBundle.asp?idProduct=27858 Not very clear but you can hear it a little here.
Has no negative effect on driveability.
I tried softening the spring tension, SOOOOO boring. half second psshh.
Back on topic. Depends how I am sitting. Have to shift it left or right.