I just got done installing a K&N FIPK Gen 2 cold air intake and I just want to make sure what I'm hearing is normal. I know I'm going to hear air being sucked in and that sounds pretty nice but when I let off the gas is when I hear this loud whining sort of sound as the rpms are dropping. I even tried it with the cone filter off and it's definately coming from the air intake. All clamps are tight. Do I have to give it some time to adjust to the increased air flow or what? I had the battery disconnected while I installed it so it should have reset itself.