Hey guys, My names Asim. Just bought a 2006 Vauxhall Astra CDTI 6 speed LIFE 2-3 weeks ago. Recently i have noticed the Turbo making an unsual loud whistling noise, it happens when i accelerate in neutral aswell but only when the turbo comes in and then after 5-10 mins of driving it dissapears and you wont hear it again. Anyone had similar problems??