Hello.
That won’t work, since EU APIMs are 64gb and NA’s are 32gb, so full EU maps won’t fit on a NA APIM.
What you need to do is to change regions, which is not supported by Cyanlabs. And on top of that, you need to install a cut down maps version, with the countries you are most likely to visit.
Having said that, have a look at this guide → Tutorial: Current EU Maps Installation on US Imported Vehicles , I’m sure you will find it helpful.