I had the Burger IC on. From the limited data available, it seems to be a rather poor IC in design and efficiency. I swapped to the 034 IC. Tube & Fin vs Bar & Plate. The 034 is lighter, more charge rows, slightly larger frontal area and volume. On paper, it should be better. I will see if there is any difference when I go to the track in 2 weeks. I know Jeff's flow bench testing is a bit polarizing on this forum, but his test showed the BMS intercooler to be inferior in cooling efficiency when compared to other ICs.
With the BMS IC on, I was seeing IAT's that were 80+F over ambient just on my normal drive home. Pulls would lower it a little, but nowhere near the numbers I have seen on other GTI/R's using different ICs. That was one motivation to swap. Also, I like wrenching on cars in my garage.
From the looks of it, BMS no longer sells this IC for this platform. Perhaps my experience with theirs is not unique.