So i just picked my car up from the shop...gas tank ($2400 job from dealer) didn't pay that but whatever...i have a 01 A4 1.8t quattro....intake stage 2 from stratomsphere and forge DV....so when the turbo spools you definatly heard it...just drove it for the 1st time tonight and under boost it whistles all the way through boost til the DV kicks in.....any ideas????