Okay, I have it fitted and I am well chuffed. Boost come on miles quicker, I can see it in the speed the boost gauge moves and I have 16psi but with the High dial turned about 1/2 way round. Will experiment with a little more when feeling brave.
On low the boost is at 8psi.
I have done a write up but its on my site at present. I will put it on here later on but you can view it here first:
SBC-D-SE Boost Controller Install : (mykp.co.uk)
I have also emailed harvey as I have a question about whether I need to remove a pipe but everything seems to work correctly.