I might have been too hasty in my drawing of the DPF dips in the instant mpg above. Some of those dips are due to elevantion changes and stop lights. These plots do a better job of showing the impacts (the instant mpg overlay is a zoomed in section of non-stop light driving, same "winter cover" for the front grill openings). I'm comparing this mornings data with last weeks for a very similar condition (same trip, temps within 1 degree, winds within ~4-5 mph). OK, now I need to focus on work . . .
2011 335d 11.8 sec 120 mph 1/4 mile NHRA certified track
2004 Ram Cummins with lots-o-mods