yes mine was remapped on the dyno by Nistune specialist Ed at Fusion Motorsport in Surrey.
I highly recommend you contact him, very experienced & knowledgable lad.
I only have the bare basic knowledge of nistune just enough to fine tune the turbo map parameters over the years. doing the actual remapping takes alot of skill & experience (therefore worth educating ourselves before venturing on) cos serious mistakes could be permenantly damaging.