Cheers Karl, i figured it would be correct after you told me about the msq and what data it has.

The cps wiring (which way round) depends on which tach select jumper you use, MS1 uses VRinv which inverts the signal and EFIextra use VR (not VRinv) for their MS2's.... Mine is on VRinv at the moment so my cps wiring will be the opposite of EFIextras diagrams.

I'll swap it over this evening and see if it helps, im also going to adjust the VR conditioning pots whilst cranking to see if i get a signal.

Cheers for the help guys i'll let you know ho i get on!

Rob,