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Hi Guys,

I have an Audi A4 2.5TDi and when the engine is running without moving it sounds fine (even cold). When the car is moving (especially when cold) it is extremely noisy to the point where people turn around! It has been chipped which I have been told can make it noisy? But if any one else has one of these cars please enlighten me as to whether yours is noisy.

Any help is appreciated!

Many thanks,

Big John
 
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