On the 2.7 tune, i have a question. Ford says you can change tire size up to a 37. Can you reduce size to increase mpg? Will it recalibrate the odometer and speedometer?
I have had the same one installed since beginning of march. the only issue i have with it is when i get some weight on it. it seems that when i get 100+lb on the shelf it starts to flex while i'm driving (not off road but on highways in MI so probably worse then off road).