Good question Vishesh, I have been baffled by this same question in the past and i guess GTO's reply makes sense. There have been complaints of excessive smoke by T-BHPians who are using the box, but no major problems have occured as of now hence the gains are more than the cons.
@ GTO do you plan on getting the box fitted on your C220? Atleast with the latest upgrade given to that engine in the new C-class its evident that the engine you are running is not put its full potential. So the tuning box would get it to full monty mode !
Hope Pete can personally reply to this thread to give us a fair judgment?
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