I wanted to see if anybody out there might be able to answer my question. I programmed my truck with the 65hp tune and everything is wonderful except my mpg is reading 35mpg. I know that the truck isn't getting that, I didn't change any setting on the tune so is the DIC reading correctly or is it reading something different.

It changes it and they don't have a 'cure' yet.

have you tried to modify the tune and change the parameters to make sure the tire size is correct ? you might want to try that first and see what happens. I havent had that problem so far

All tuners 'fool' the fuel management system and report expectional fuel mileage. I am not sure why there can't be a cure but have never heard one yet for any tuner out there... maybe someone will chime in with the detailed technical answer.

i think it also depends on the vehicel, it seems like its way off for some people and not as off for others. Ive been running the predator on 100hp and my dic is only off between +1 to -1

I think I found the problem, the tire parameter was set to a different tire size. Don't know why but we'll see if that works thanks for the replies.