Thanks Guys, so much. The suggestions have kept me going and I appear to have a working P38 (for a while)!!!!!!!!!!!
Checked the turbo for problems and no blockages found and waste gate found to be closed.
At the inlet manifold check MAP was connected, tick and temp sensor, tick.
So took manifold off and changed the new no4 injector back to the serviced old one. Reassembled and started easily.
Didn't run great to start with so took it for a drive for an hour around Jersey and just seemed to to get better: The FIP had sat in my garage for a year at least????
So have been to the shops and just out for another quick spin starting easily and no engine warning light at all!!!!!!!!!!!
Very very pleased and thank you again.
Did have one change of pants moment when the out hose popped of the turbo when I first accelerated hard (hadn't done the jubilee clip up enough/ bit high on the connection!
Next job could well be to remove the hot start fix, headlinning and A pillars........ And just need to give her a decent run to the alps or Snowdonia or somewhere nice........... (Just need to save for the ferry ticket)
Thanks again you are bl**dy brilliant.