I have an Ipod Nano 4th gen
Q. Does the music start as soon as you start your car? Or does it have to wait for the unit to boot up?
A. You have to wait. It takes the same amount of time as the map when you have nav mode on... slightly faster when leave the display on ipod controls. It's on before i put my truck in drive after backing out of the driveway. I have about 80ft. of driveway.
Q. Does the iPod automatically turn on and off with the F90BT, or will I have to manually turn it on/off?
A. Yes, automatic. music starts where you left off when you turn it back on.