Ah thank you much dave! Looking forward to getting back to my car in July so i can start playing with this, tunercode is also oh so very tempting

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in my research i've found a couple other interesting tid bits, if any one can verify this info that would be GRAND!
calculating new K value: (MAF is the same)
new k-value = (new injector size)/(old injector size) * (old k value)
Fuel Map values: (do these rules hold true for all Nissan Bins/xdfs?)
If the MAP VALUE is less than 128, then MULTIPLIER = (DATA + 128)/128
If the MAP VALUE is greater than 128, then MULTIPLIER = (DATA – 64)/128
Values above 192 are closed loop. 192= correction factor of 1 (non)
Values below 192 are open loop. 0= correction factor of 1 (non)
What is the multiplier/correction factor mutiplied against? I am assuming 14.7afr?
Hope this info can also help someone else, if others have better info or can correct anything that is wrong with what i've posted please do so.
Thanks for reading