[mistermojorizin]

theoretically, they could. safer to remove b4 service.

i'm sure you'll get some responses saying "i go in for service with intake all the time" but i know people that go in to service with chip installed. it doesn't mean anything. also, people will probably incorrectly site the Magnusun Moss act, even though it doesn't apply in your jurisdiction, and even if it did, it doesn't really help - but it makes people feel safer here in the states.

bottom line is it depends on if the dealership/bmw is in a good mood that day, relationship you have with them, etc. its a risk.