i think it sounds good, i know in europe they do it to the earlier models, pre 2004 and that brings them up like the post 2004,s, however from my limited research ( oh i have a 2005 3.0d sport) i suspect you will be asking to much of your drive line , especially the transmission if you go down the chip path.

i suspect its ok for a newish car when everything is in top condition, but i suspect the second owner will pay.

it seems also that the X5,s delivered to NZ have a higher output than our Aussie cars, as they dont have the heat to contend with as we do.

my thoughts are if you can afford some costly breakeges then go for it, otherwise enjoy it for what it is

if you do choose to get your car chipped keep us posted on your experience please

Ewen