Hate to be pedantic but the acronym M.A.P. is short for
Manifold Absolute Pressure, I am guessing the figures spoke about here are GAUGE PRESSURE (and not) Absolute pressure, so please if we can talk in absolute units for sake of comparisons.
Turbine Inlet Absolute Pressure (T.I.A.P)
&
Intake Manifold Pressure (M.A.P)
And list it as an absolute please, as its confusing and annoying

and no one has any idea if you are at seal level or in Tibet or what the actual figures are LOL.
M.A.P. is not '15psi' cause that means its like 0.3psi boost at sea level on a std'ish day lol........... and 'EMAP' that is just a stupid convict expression not meaning anything to anyone LOL.
If we insist on using gauge imperial units and at gauge readings then please use the correct references.
manifold gauge pressure = m.g.p (psi)
turbine inlet gauge pressure = t.i.g.p (psi)
and then list the ambient pressure you got those readings at
OR simply use absolute units as its much easier understand!!!! and compare.
Thanks.