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Husker,
Thanks for the input, I do have black soot, perhaps I can take a picture and maybe you can tell, the battery idea sounds good, but 2 days really?! I actually ran into my Porsche mechanic today, and he says the car is still in break in period ~3200 and when reaching 5k+ it will get better?? I know its not about the mpg with this car, but I just want to make sure the car is running properly, and the better mpg won't hurt.
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