All of our dyno graphs are measurements at the rear wheels, whereas Ford's advertised measurements are "flywheel," meaning engine disconnected from any running gear. The reason for the horsepower differences between the 2014 and the 2018 is because of the type of transmission. On the 2014 we are not able to put it in 4th gear which is 1:1 engine to transmission ratio. We have to run in 3rd gear which adds a multiplication of power thus showing different #'s. The most important thing is the apples to apples comparison.
We generally do not remove the down hill grade brake feature when in tow/haul mode, as it will help you with staying off the service brakes as much.
The SCT X4 device will display available engine parameters include engine coolant temperature, battery voltage, intake temperature, spark advance etc, it does not come with the suction cup mount but that can be purchased separately.