Originally posted by Macabre
This is not an 18g. It's an "18T" which is an upgraded stock TD04. Where did you see FP say that you could get 22-24psi from an 18T? Keep in mind there's a BIG difference between an 18g and an 18T (i.e. they're completely different turbochargers). 18g should hold that boost with the right supporting mods but I really doubt the 18T would.
Call FP and ask them. They will tell you.