Been working on both the silver car and this blue one with the help of Dean and my mate Ian. Both cars are now running well.
The silver car was the crank angle sensor a little too far from the trigger wheel to get a reliable signal on cranking/idle.
With regard to the blue car, I started changing a few bit. Began by replacing the BCR8es plugs with IK27's and altering the fuelling for cylinder 4 (plug indicated running richer than all the others). Took the car out for a run and it was still missing on the higher boost settings. Next we replaced all coilpacks, increased coil charge time a little then went for another drive. No misfire even on the high boost setting (1.6bar) so came back in to check the logs. Knock control was fairly active and the lamda control was at its maximum to try and achieve target numbers. Modified the ignition maps to reflect both knock control and lamda control until we got it pretty close with changing the ignition maps by a fraction of a degree and lamda control only making 1-2% fuel changes. Very happy with the progress as its now pretty close to the limits so only minor alterations will be required.
PS. It's quick......really quick, but still no loss of traction so nice and safe on dry days. I've got the N/A setting for when its wet to keep me out of trouble.