I also have GrimmSpeed's 3port-BCS + MBC sitting in boxes right now. I know you set them up on your WRX nicely, but do you know if it's possible on an Si-Drive model? If you tune it right for the S# mode, then what happens to lower boost thresholds in S and I?
I would also do the MBC relocation mod if I went that route. Thanks for the pics
