yea. I actually did a 13.404 on my last setup.
Lowered boost because the GroundZero manifold is a lot less restrictive so more power at the same boost level. I didn't get a re-tune and wanted to be safe that I wasn't going to knock or anything. Turns out all is good, so Apexi AVC-R is next.
No, my T04E actually flows more than my old T04B. When I get my camera working again, I'll post a pic of the two side by side. The T04E is significantly bigger. Plus exhaust side of my new turbo is tangenal as opposed to my previous oncenter housing. So efficiency+x there.
-1% means I took out 1% airflow voltage AKA leaned it out a little bit. Expirmenting.