I've got a Garmin 450 that came with the bike I bought it works great, actually the speedometer is far more accurate than the one on the bike and much easier to read, but the map is WAY out of date. Garmin wants like $75 to update the map online. I think at that price I can spend a little more and just buy a new GPS . Any one know if there's a way to go online and maybe download something from google , mapquest or anything???