TDI torsion value effects a lot your cars fuel consumption. So if your TDI is not getting the same fuel consumption figures on road as your friends at same speeds its fault could be badly timed torsion value. VAG spec says tolerance is +-3,0 range and fuel consumption difference can easily be over 10% inside those values. Depending on your car you can use even higher values if car still works normally, like this audi best value was 6,0 value but car has already pretty many km in the ODO.

Your idle fuel consumption tells already something
On working TDI values should be
1.2TDI 0,3 l/h
1.4TDI 0,3-0,4l/h
1.9TDI 0,4-0,6 l/h

Best torsion value for each car is different so you need to find out what is best for your car. Even 0,6 degrees change can have huge impact to your fuel consumption figures so it takes little time to find best values for your car.

More detailed instructions at: [ Ссылка ]

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