Dont known if I have done something…
Dont known if I have done something wrong, or maybe it takes longer to start working then they say. Purchased a stage 3 for my 2007 Dodge Dakota to hopefully get better mileage. Per recommendation from tech at chip your car. Don't need more horsepower just mileage. I drive mostly interstate and two lane road 45 miles one way to work. Have had it in for 400 miles so far still on getting 18.5 mpg, which is what I was getting before. Maybe I need to unplug and start over ????