I have a Moen Pressure Regulating Scaldguard single handle shower valve that reduces pressure way too much. I changed the shower head thinking that might help. Is there a way to disable the pressure regulating mechanism and scaldguard feature to get full pressure?

In all the shower heads sold nowadays they have a small neoprene washer with holes located just after the threads. This is a "water saver". Pry it out and you will have full volume. If the Europa is your shower head of choice, check first for the neoprene washer, toss it and rubadub under a full stream. I should have added that most any shower head will give you full stream once you remove the "water saver". So you now have a lot of choices. Hope this helps and thank you for rating my reply. TOM