MSefi.com read only forum (Jan.15,2018)

the Megasquirt Product Comparison site indicates that MSII allows Synchronous Sensor sampling.

http://www.ms3efi.com/feature-xref.html

So from my undersanding MSII should allow you to synchonise the MAP sampling at a particular crank angle
I'm using Tuner Studio and MSII v8.89 and I have EDIS 4 for ignition, and there doesnt seem to be anyway of doing Synchronous Map Sensor sampling.

It's firmware dependent. This feature appears in later firmwares (both MS2/Extra, discussed on MSExtra.com, and some B&G code variants as well).