Recently I received and installed my new Edge programmer. This is a great addition to my XLT. My question is how accurate is the MPG feature on the programmer? How does the Edge compare with the factory MPG calculation? So far in mixed driving (70% hwy/30% local) its showing a respectable 16.7mpg considering my tire upgrade to 33x11.5's. I plan to complete a full mpg calculation over the next month or so but just wanted a response from those who have the MPG that is determined by the truck itself.

TIA,
Ox

 

It has been my experience that they are very close to the same if not exactly over the course of several fill ups.