^ a few threads including this one indicate the direct system is supposedly required by law... and after all discussions it's pretty evident it's the direct system in the E70s (but BMW decides not to display the individual #s).

http://www.xoutpost.com/x5-e70-forum/...-question.html

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'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr