Coming from a boosted 350z I can agree with the 'turbo shenanigans" that RCZ speaks of! I penny pinched and paid the price however...get turbo kit over here, fuel management over there, ecu used from forum guy, tuning at a 3rd shop, troubleshooting at a 4th shop - penny pinchin the whole way. Your constantly chasing bugs and fixes and in the end your afraid of going 100% full-bore boostin (which is why you go FI in the first place
) in fear of the big kaboom!
IMO if you are even considering FI pay the big bucks and have it done right the first time! Go to a local reputable shop that backs up their work and be sure your Z is not the 'guinea pig' project. Buy everything from them and have them install EVERYTHING. Youll pay $12-15k for the whole shebang but your can sleep at night knowing your investment can be enjoyed to its fullest and if something goes wrong you know exactly where to take it to get fixed. Just my .02
With that being said FI is the only route for me...when more kits become available that is