Some of the members who participated in the group buy had damaged cooling fins. It was nothing major, but not something you would expect when you're paying a premium over the other brands. My fitment issue was the misalignment of the radiator clips. They were off to one side which is causing unnecessary stress on the ends where you screw the FMIC in place. Any type of quality control check should have caught both of these issues. As for the overall performance, it seems to remove heat faster than the stock unit, but normal operating IAT is the same which I'm assuming is the case no matter which air cooled intercooler you go with.
2011 E90 M3 ZCP/AW/Ohlins R&T/Vorshlag CP/Stoptech ST-40 Trophy Street