You used it on a Rodeo? Did it return the code "POS"?
(sorry couldn't resist)

One other thing to add:
You can change the default gage update rate to FAST and it works fine on both generations of X's (at least it does on my 03 and 05), according the manual some vehicles can't handle the faster rate.

to change update rate:
More>More>Rate - default is Normal, change to Fast. It increases the refesh inteval.