Hate to hijack this philosophy thread, but it was a boost leak. The hose on the turbo was loosening at boost. Clamp wasn't on there straight. Its always the hardest to get to that need attention. It is t-bolted now and not going anyhere. I couldn't find it blowing on a hose, but when I put 20 psi compressed air on it whooshed.
Ran some 17 psi runs got good numbers with no more than -12% corrections.
SWEEEEET!!!