I recently purchased a 2013 GMC 3500 diesel truck and on the dic it will give me average MPG and the owners manual states that instant mpg is available if so equipped. My question is is it a software...
I use this and use the Torque app to see instant mpg on my smartphone or tablet. My ecm has this information but my dic doesn't support it. Works great and there are other things you can load to watch also such as boost,fuel flow,coolant temp and more
