Hi Guys, I have noticed a noise coming from under the bonnet when I release the gas pedal. It sounds like a bag of nails/scrapping sound coming from down by the divers foot well. The car is a 1.9 tdi 130bhp. I notice it most if I drive in 4th gear accelerating from 1500rpm -3000rpm and release the pedal suddenly. Any ideas on what this could be? I'm hoping it's not the turbo. thanks, Gavin.