RPA's function by adding a percentage of your current pulse as bonus bits of experience without impacting how much is actually drained from your field experience pools. E.g. a level 4 RPA adds approximately 75% bonus experience to each pulse for a total of 175% of your pulse earned in experience but still only draining 100% of your pulse from your field pool. Because it's a percentage of the base, the simucoin booster alters your base pulse size*, and the duration of an RPA is finite, this should mean that you would get more out of your RPA when under the effects of the simucoin booster.

Here's the thread for the differences for F2P between not having the simucoin booster and having it just to see what the difference would be:
http://forums.play.net/forums/DragonRealms/Abilities,%20Skills%20and%20Magic/The%20Experience%20System/thread/1712960

Details on RPA bonus levels were taken from here:
https://elanthipedia.play.net/mediawiki/index.php/RPA#RPA_Levels

*This is an assumption based on the fact that all bits that are added to permanent experience each pulse are taken from field experience. It would be nice to get a GM confirmation.

---

Elanthipedia - https://elanthipedia.play.net/mediawiki/index.php/Main_Page
Epedia Admins - https://elanthipedia.play.net/mediawiki/index.php/Elanthipedia:Administrators