the d-3 has a built in speedometor does the f 90 have this if so how do i axcess it

Not out of the box, but it can be added to the map screen without much work.

Not out of the box, but it can be added to the map screen without much work.

Actually, there is one out of the box. It's on the screen that shows the satellite signal strength, as I recall.

Under Navi Map settings, although I don't remember which one, you have three choices for which information to display on the map screen. Default is ETA, Distance and Time. You can change these by selecting them; one option is your speed as per the GPS. While this is handy making sure your vehicle and GPS agree, its hardly worth keeping this way since you have one in your vehicles dash which would be infinitely easier to read.