Originally Posted by myfirstjeep1
What do you guys think is different between the motors of the new ok and the model years that hypertech supports?
Interactive fuel decel shut off which would be a change in the computer, another change I know is the coil packs or something like that are a bit different. This change is easy to see when looking under the hood at the intake manifold area.
The newer KKs get I believe 1 or 2 estimated mpg better than the older KKs which leads me to believe there is a bit of a difference in the computers. It's hard to find the exact differences. A few of us have been curious about this for a while now.