Your car looks awesome buddy, has it been lowered?
You should come to our MK meets, follow the below thread to get the alerts;
http://www.350z-uk.com/topic/105419-milton-keynes-surrounding-areas/page__st__100
Can't remember who wanted Meister coilovers but here's the link to the clubs 10% discount code;
http://www.350z-uk.com/topic/67477-10-off-free-shipping-for-meisterr-coilovers-code-350zuk/page__st__40
Looks like it has black Rota's on and comes from somewhere in Woburn Road Industrial estate, I keep seeing you around 13:00 - 13:30 every day but i'm never in my car when I do!
Good to see you all again, hope you made it home ok.
I had to sit next to the cops at some lights and pretend the noise wasn't coming from me, don't think they fell for it!
Hey Buddy
Not sure if this is any help;
http://www.notre350z.com/forum/files/uploads/Zaza%20Z/1198356492_350Z-G35_ECU_Removal.pdf
or
http://shop.amrperformance.com/350Z-370Z-ECU-REMOVAL-GUIDE_c_2301.html