I am fairly new to the turbo scene. I have recently moved from the 5.4L 3v to a 3.5L ecoboost in my 2011 f150 fx4. A little background first. I got a banks ram air intake with not custom tunes. I first encountered the dreaded misfire issue which I solved with a new set of plugs and mega canclean side separator. All was good till it came back shortly after and the filter on the PCV had a crack in it. So I fixed that. Now I have another issue which is unrelated to the misfire. Idle is fine and even off idle is fine but when I give it full throttle from a roll it won't build boost. It fluctuates between 11 to 16 psi then stays steady at 11 psi after a couple of reps of fluctuations. Now normally it would build up to 17-18 psi and stay there thru the pull. What has me baffled is if I give it wot from a stop it does exactly what it is suppose to do. So I am thinking either both my BOV or waste gates are the culprit. If so how can I diagnose which it is?