A lot of the whine is determined by how fast the blower is spinning. With a 3.4 in. pulley on my Whipple (11 psi) it would whine pretty good at half throttle, half revs. With the 4.0 in. it was always much less and you had to have pretty big throttle and revs to really hear it good.
2013 GT Premium, Red Candy Metallic, Brembos, Auto, GT500 Axlebacks.
SOLD! 2008 GT Premium, Vapor Metallic, 5-speed stick w/MGW, Ford Racing M6066 Whipple S/C, 3.31 gear, GTA's. GT500 front end, spoiler, suspension and wheels. Sequentials and one touch. - can't wipe the smile off my face.