OK, here's an update:
a turbo is going out to BEGi to be inspected, they will let me know if it needs to be rebuilt and how much it will cost to do the upgrade, we'll see what they say but if it turns out to be too expensive I'll get an AEM EBC and see if that fixes the issue, should work better than the MBC I have now. Other than that, I'm waiting to hear back from a guy for a sponsorship opportunity. Depending on what he offers, I'll be ordering some parts.