What do you other manual guys get for MPG on the highway? Doing 75 in 6th gear, I can't seem to get the MPG gauge to go above 20. It has been awhile. But, I seem to recall the auto doing better. Makes me want that 3.64 diff swap even more.

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2004 X5 3.0 6 Speed MT
Build Date - 09/03
156K Alpine White / Black
Premium & Cold Weather Packs, Nav,
Tons of lighting mods, 4.8is Exhaust, Headers, Eibach Springs, OEM 87's, Custom DME Tune, OEM Hitch.

2005 X3 3.0i - 100K - Blue water Metallic / Black

2005 X5 3.0i - 140K - Alpine White / Hellbeige 2