Thanks guys,
After consultation with the guru of all things Skyline, it appears that I am unreasonable man to expect that my car will utilize all the Nissan given functions.
I will soon have an LTX-12 Microtech ECU complete with hand controller, laptop adaptor and software for sale. Apparently a great unit, if you don't want to run all the standard functions of the factory ECU. Unfortunately, up in my neck of the woods, finding someone who can tune them (Microtech) is harder than finding rocking horse ...t. I will soon post this in the for sale area but if anyone wants to make me an offer before then feel free to do so.
Cheers
Murray