Hey guys, I've been doing a bit of digging as I would like to upgrade to the g3 ultra maps on my echomap plus 93 units... but I'm a bit confused, should I purchase the physical chip or go through active captain? I don't want to lose active captain and pull my 32gb sd cards already in the units. Would going through active captain simply send the data to the existing chips? Is there enough internal storage to update the maps and keep my sd cards? I guess I'm generally just confused by the process of updating my maps...