OK, the ECU is adapting. Especially in the mid to high rpm range, my truck is a beast now. And still with excellent smoothness of delivery. It almost feels like I swapped my engine out with a higher output engine. I was driving around tonight with a stupid grin on my face like I had the day I bought the truck. The JB4 piggyback tune I had before was good, but this is on another level. Plus with this you can adjust the throttle response and shut off the stupid AutoStart/Stop. And the cold air intake wasn't that much more work to install than it was to hook up all the sensors for the JB4, especially that one way in the back of the engine bay.