Oh man, I’ll get 27mpg if I’m real highway cruising at a real speed of 75-80. I’m deleted with dudmd stage 2.
I usually get 28.5-29.5 at 70 real speed on cruise control. I’ve gotten 31.4 when spending an entire tank at 68 real speed, and I haven’t had the patience to try slower.

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'10 X5 35d- 279k mi, deleted and DUDMD stage 2, daily and tow vehicle
'01 330i- Drift car: SLR Super angle, BC coils- keep it simple
'07 335i 6mt - Sold @ 171k miles- stage 2 daily commuter for 2 years