I was driving my 02 Audi Roadster Quattro (was 225) today and just as I was starting out from a light I heard a loud bang. Instantly my power dropped and my turbo whistle increased. I am thinking I cracked the turbo. I am not consuming oil or water so I know its not a head gasket issue. I had a friend follow me home and he says whenever I shifted there was a large puff of grey smoke. I am thinking to much gas, the engine is trying to compensate for a blown turbo, dumping extra fuel, and its burning in the exhaust. I am correct in what I am thinking? And if so, can anyone suggest a good place to take it to get it fixed. Or should i do a stage 1 or 2 upgrade with a front mount? I also have this in the vw/audi section. thanx