Ok so I changed back to my stock BPV and went for little test spin. While driving I downshifted from4th to 3rd at about 50mph, laid into her, got a little poof of smoke, boost and a CEL. ****, turnaround go home and pull the code. P0021 Camshaft position sensor timing advanced.

So i'm thinking do some compression tests, then hopefully all is well, and we look to check the timing.... any other ideas?