4.4 V8 petrol 2006 HSE Engine Performance upgrades info wanted

[4x4instyle]

Hi all, I'm after any info on doing performance upgrades to a 2006 4.4 V8 petrol HSE.
Like Camm, heads, exhaust or if anyone has fitted a Turbo or Supercharger to one of these motors and what issues were there with computers etc.

All and any help gratefull

[rar110]

A remap should be possible. But surprisingly I haven't heard of anyone doing a remap on a 4.4 jag L322, RRS or D3.