2006 06 astra with 48k on the clock. Anything over 2000 revs and the car makes a funny noise and spews out lots of black smoke. Take your foot of the gas and its gone. This is the same in gear or neutral. I got the car as accident damaged and have fixed it up so I dont know how it drove before but it does seem somewhat gutless...
Is this likely to be the EGR or the turbo, or something else. The noise is not a turbo whistling noise, more of a whirring/grinding sort of noise..
Thanks for any help