Mayhem you are correct the rich issue that occurs just after the gear changes is do to the lag of the fpr bleeding down the boosted pressure. We are trying to work out a solution that does not require a retune but that maybe what has to happen. What is nice about this system is once it is fully dialed in you can control your AFR's without having to get retuned so based on weather and location you can dial in your car for optimum performance.
Just to clear up the fpr sits at atmospheric pressure and only see's any kind of boost until certain parameters are hit such as rpm and boost along with tp. If any of these three parameters are not hit it does not boost.