How can the fuel on a 2007 CLK 220 diesel engine be adjusted?

Re-Mapping the ECU, or adding the appropriate tuning-box--The Former is preferred....

No 'simple' way will reliably work, and could make for a real nightmare...

These newish cars have fully computer-controlled, Common-Rail injection so the 'Tuning' is done by Software/Firmware....

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http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....