Avus,
Any updates on the dyno pull? I just got my 2010 550i back today after doing the Dinan software upgrade. It's like a beast now. I'm not sure if I'm going to be disciplined enough to measure better gas mileage with my foot in the floor pan so much, but there is definitely a ridiculous amount of power increase felt. I plan on taking it to a local drag strip just to record some 1/4 mile times. I do have to do something about these run flats though...don't like 'em at all.
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