I found some map on other forum but they are hard to read and transfer to ms. I am also not sure if I should be running negative split under boost or is positive split. NA map show 0 split under load.

 

there is no negative split on the ms.

you should be running higher split under boost...

 

To start out with just set a fixed split everywhere of 15 degrees. You can tweak that later. The less the split the more likely you are to detonate. Keep it this far and then set overall timing. You can go back and fine tune everything later.