About the FMU and regulatar... Dont go into boost, just save your time and money for a real tuner... Its not that much money and you be thankful when your motor doesnt blow after 2 passes at the track.

For the other problem, do you have a oil psi gauge? whats it reading at idle? What do you mean by cam bearing? Are you talking about the cam cap? or the rocker? can you maybe get some pics? Im assuming your talking about a LS motor right?