but the OP was in the USA asking about a product for a USA X5d... THE ECU's in the US cars are different than the Euro spec'd cars... YOU need to do your research before you post useless things to all involved... Every single person except you was talking about US spec'd cars, not Euro spec'd cars... Please do your research before you burn bridges with everyone... I may not know everything, but i do know there are differences between US spec'd BMW's and Euro Spec'd BMW's...