You should have posted this question on your previous thread instead of starting a new tread. It contains background info to help answer this question.
antenna reception Toronto North
http://forum.tvfool.com/showthread.php?t=16005
Can you show us a photo of the splitter and tell us what is says on it, or give a link to it?
Using a power passing splitter between the preamp and the power inserter should give the same results as an ordinary splitter after the power inserter.