I agree, they sound reasonably professional and feedback is good...im gonna wait until i see a few more threads i think. Interesting to know though.
Well you seem to be swaying towards the Black Code.
Go for it if you feel like it, I'd just hate it if those guys took your money and it turns out to be a rip off.
Just because all 350Z come off the same production line, it does not mean they then have the same life afterwards.
Cars lives vary from caressed and loved to used and abused.
This is what doing an UpRev takes into account, whereas the Black Code just throws out a generic map.
It could be good for your car, it could be bad for your car, or if it's a fairly conservative map, then you wouldn't get the proper benefits of a remap.
Just my opinion.
Give it some good thought before you decide either way.