The good programmers like Jody and TWildman know what to program when you are running big oil. The pressure is not to be concerned about as the program will ask for whatever they program for. Timing is changed with big oil so they will program for that as well. It is very important when you get big oil you get the proper tune/program for it.
As far as dyno sheets I don't have any. Just by adding big oil your not going to a huge jump in hp. The huge hp jump would come from other mods you would now be able to utilize because of the big oil. Big Oil alone you would see a much broader power band, snappier off the line and depending on the state of your current hpop and program much more power on the top end because your hpo will not be falling off on the top end.IMHO