Could some please confirm whether there has been a power upgrade from the '07 X5 3.0d (160kW) to '08-'09 X5 xdrive30d (173kW)?

I note that the new LCI X5 xdrive30d now comes with 8 speeds and they tweaked the engine to 180kW.

Is the power upgrade noticable at all in terms of fuel saving and performance gain?

Thanks
Leon