To compare apples and oranges.
I have a 51mm tb, slightly ported head, gt inlet, shrick cam, and an OBD stage 2 charger and see at best 7 psi. Im pretty certain that this should be a bit more as it feels slower than my jabba stage 2 charger, and that had done 20k miles or more. Problem with different porters, no way to compare. Have to wait and check when I rebuild the jabba one.