Please supply year and model type as well as engine type. The older (up to about 2009) X5 has the 160kw 3l diesel which is easy enough to do the egr delete. Unplug the egr vacuum pipe and plug it and the egr with a nail or similar. Job done. Problem some times is that the engine light might come on and for that you will probably have to get some one to program that out for you.