I just purchased a 2000 f250 7.3 crewcab with 79k miles. I found a superchips flashpaq 1855 behind the back seat. I was wondering if this tuner is good at all. I've tried doing some research but couldn't find anything with it paired up to a 7.3. I was planning on trying out the fuel economy (mileage xs) tune setting. Does it actually work? What kind of gain in mpg
do you get. Will it hurt my truck? What about performance setting is it just gonna tell it to feed more fuel thru injectors? Any input would be much appreciated.