because its rare..when its time to sell X I can use it as a selling point and why not have paper work if its rare for myself..You go to car show and most of the cars there have paper work of some sort

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1st 2008 X5 3.0 in alpine white/saddle brown in USA

(had)2001 x5 3.0i dinan engine software,dinan trans software, dinan throttle body