Originally Posted by pbonsalb
I did exactly what you are thinking about. I later sold the Delete-R and bought the DPFIX since it was much cheaper and seems to do the same thing. Now out of regular warranty so I will not be going back to the dealer unless there is a problem for which there is CPO coverage.
Has the DPFIX been reliable? How many miles do you have without a CEL? Many on the forum stated they didn't believe it would work and so far I haven't seen much feedback.
I am not an expert but I think the DPFIX would be impossible for BMW to detect as the light never comes on vs. with the delete-r the light comes on and is then cleared.