First off welcome to the TDR.
I don't have gauges yet so not sure on EGT but you should be getting around 21psi boost stock. There are several ways to get more boost by restricting the signal to the wastegate, however it won't do anything for power unless you're adding more fuel with an electronic box and/or bigger injectors. If you're making more boost than stock you need a "boost fooler" electronic module that fools the computer into thinking it's only seeing 21psi, else you will set an overboost code in the ECM.
If you're not aware then be advised you need a fuel pressure gauge for these electronic trucks, the fuel transfer pump is prone to failure and can take out the $$$ VP44 injection pump if not monitored.