So I found the wiring diagram for the patch cable, to connect the PC and easimap 4 to the 956 ecu.

So I cut a standard serial cable and then re-jointed it in the correct order, with the resistors in place.

if confused by the picture, the box is a decade box (simulates resistance). I had to use this to allow me to get 1050ohms as this isn't a standard value (but a resistor is on the way so the cable can be completed correctly)

and guess that?? it worked....

the interesting things I found are that the password is indeed the standard "1111". Also, with the car running a little rough, I found that it was mapped for (as shown in the picture above) throttle bodies and BP270's

turns out that BP270's are fast road piper cams, and mine does't have these, mine has a 130 inlet cam and a 136 exhaust cam.

gonna phone westfield tomorrow and find out if the car left the factory with piper cams or not?