Boosted Performance Build Questions

solidus

You're asking the right questions. If I were you I'd actually talk to Charles from CJM. You'll learn a ton in a quick chat. I'll add this though...... I've probably jacked up more on this kit than anyone else who has publicly admitted to jacking things up. I don't know everything but I do know what'll make you go "DAMN!!".
That said , I'd absolutely recommend going to a minimum of 1050X injectors. I'd also definitely get with CJM at the time I ordered the Return System and get the Deatchwerks Wiring. I'd run a 4 bar Map sensor and E85 sensor and tune for FLEX. I would also opt out of a boost controller in favor of boost by ECU via tuner.
My first build stock block made 509rwhp on 93, running a 6266 Journal bearing and the supplied 740 injectors with a standard CJM Return. If I had a tuner that was VQ proficient the first time and went with E85 then took away or locked my boost controller I could've approached 600rwhp reliably.
Being cheap up front has cost me to this point, the same as a high mileage 370z and the party ain't over.
If I were'nt a believer in the boogaloo and not tending my arsenal and gear , I'm pretty sure I would've spent another 10k in the past couple months making everything bulletproof and sexy.