I've updated my previous post (post #30 in the thread) with more stats. Check them out - http://www.xoutpost.com/747453-post30.html.
**Added MPG per refill, and over the life of the vehicle:
Avg Consumption: 22.02mpg
Avg price/gallon: 2.80
Avg price/mile: 0.13
Overall fuel cost: 886.30
Avg miles/day: 35.01

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I get about 15mpg (based on car computer) in my 535i with Dinan software/exhaust and a very heavy lead foot (I drive very hard in the 5er).

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*2010 X5d - Space Gray/Black Nevada/Dark Bamboo|ZPP|ZAP|ZCW|ZTP|ZRC|322|328|386|4NC|4UB|655 |6FL
~Ordered 8/27; Production began 9/28 at 12:20pm; Completed 10/7; Delivered 11/4!~
*2008 535i Black/Black - Dinan Exhaust & S2 Software
*1995 318ti Clubsport - Hellrot Red (autocross/fun car!)
Past: 2005 X3 3.0i; 2009 335xi