Is there any way to display the speed in mph on the map? Seems to only kmh.

I'm pretty sure that the units are dictated by whatever is set in the settings. If you set it for miles then you get your speed in mph. If you set it for kilometers, you get speed in km/h. I haven't seen any way in the scripts to override that on a per-display basis.

Not to sound like a troll, but you obviously haven't read the manual or bothered playing around with the settings at all. Its pretty easy to find in both places (manual and settings box)

Ended up getting it working. For some reason, it only displays mph if you have it set to miles/feet. Miles/yards gives you kmh. That's what I was selecting because that would be preferred. Silly me for thinking selecting either of the mile settings would give mph.