I know it is probably a curse word here, but I'll say it - Chipwerke. I agree it is suboptimal. I would not want to run it permanently. But, it will not affect the stock ECU mapping or reflash count. When removed, no trace of its presence can be detected. It will not produce TD1.
Does it produce maximum HP? No. Is it smooth in all operating modes. No. In fact, it has definite drivability issues in some part throttle situations on my car. But, it does, in fact, reduce 0-100 mph times by two full seconds. I have not dynoed the car. But, to accomplish that, it must be bumping horsepower by at least 60-70 all wheel hp. This is not insignificant in a car that weights between 4,200 and 4,400 pounds, depending on how otherwise equipped.
I do consider it a viable TEMPORARY option until you get past the initial service intervals. As it only connects to the QD plugs on the MAP sensors, it can be installed or removed in less than 5 minutes.
I will definitely move later to a true reflash. But this early in ownership, I want to make sure I have no reflash data on the ECU when it goes to the dealer. When that time comes, I'll disconnect it in advance and drive on stock ECU for at least 50 miles in order for the ECU to relearn the stock fuel trims.