Hi All,   I've had a thorough scan of the forums (the most useful threads coming from briskoda), so I'm aware this is a much discussed topic. But I wanted to summarise what i've found to be the most likely possibilities and gain your thoughts and experiences?   Camshaft timing - torsion value adjustment. The car has had a recent cambelt change. Check idle stabilisation via injection quantity.  With the above addressed... EGR delete and ECU remap/re-calibrat