Hellow everyone. I am a new member and this is my first post. I just bought a new to me 2003 Magic deck boat with a 575sci. (Largest motor I've owned so far)I purchased the boat in Havasu and will be taking it home to a 3200 ft elevation. My question is, is the EFI system altitude compensating or am I going to have the map/ecm adjusted. I do plan on returning to Havasu a couple of times a year so I'm hoping I don't have to have 2 Ecm's. Your thoughts?