Engine programmer chip

[sakoshooter]

If you're really concerned about mileage, why the lift and big tires? You'd have been better off leaving it stock.

[thinkingman]

I would question whether you're getting 14 MPG.  If your speedo is off, then your odometer is off also isn't it?  So if that's how you're figuring your MPG, I think it's wrong.  Sorry

My thought exactly....I always wonder if the guys with the big wheels ever re-calculate their actual mileage.