Carpespasm writes “it seems that all shower mfgs have had to comply with low flow regulation for a while now, but my shower was choked down too low to be enjoyable. so what to do? modify it of course! first i took the whole thing apart, and looked for the areas with the lowest flow. upon inspection, it turned out to be several places. i have one of those “head on a hose” shower heads, and there were restrictors on the ends of the hose, in the swivel mount, and in the head itself.” Link.
DIY shower modification