Take it off and see if your mileage goes back up. That will at least tell you whether to look at parts on your truck or to have edge look at their equipment.

 

i pulled the battery cables off overnight and i hope it will turn the light off..i really dont know what to do

 

i checked the fuse power source and its the one they recommed..i send edge a email and no one resoponded..my engine light is coming on and off...where whould i check the harness? or should i pull the chip?? the truck seems to be running good..