New noise just started today. Sounds like a rattle coming from behind the dash at high rpm and turbo boost. Truck runs great, boost levels look OK, sound present but not as pronounced at high rpm in neutral, or going down the road in low gear, high rpm, and low boost. Noise seems to come in at 2500 rpm and get louder the higher I rev it. Any Ideas? I plan to pull the truck hard Sunday, can't get in for service until Tuesday- they're sending me home in a Focus
