Ok i installed my mp-8 a couple weeks ago and on the over head sometimes it shows up to 22mpg, but i hand calculated it the other day and it was actually getting a little worse. Can anyone help me out?
Cruise control on at 65 i am seeing 23.9mpg on ovhd, did 600mi and got 21.6 hand calculated. Not bad, cause I had a 600lb quad in the bed, towing 2 dirtbikes on a bike trailer, and 3 people in the truck.i'm running the same set up you are and milage is a lot better. If you can tell you have the mp-8 on the truck your milage will be bad. Try drivin like your 65 and half blind that what i do.