wastegate and injectors questions

[TeamORI]

first...i plan on using a big 16g or a 14b...prob a 14b cause i can get more power out of it, but heres where i run into some problems...the 420a can only withstand 8psi..and even 9 is pushing it, yet both the 16g and the 14b run 10 or more psi stock...could i use a boost controller to turn down the psi or would I have to mod the internal wastgate in the turbo to open up at 8psi instead of 10...if I do have to do this is it an easy and cheap task?...or is there any other way around this that I have thought of or researched yet

secondly...I was gonna use 450cc gsx injectors for my kit, but I was told by my mechanic that those will not work...what kinds of injectors is everyone else running for there 420at cars?..oh and whats this fmu i keep reading about, and that i apparently need..I'm still very confused about it, from what I read it's like a fuel pressure regulator or something like that...can someone clear the air for me on this questions...thanks very much
-Jack

 

[BigRand]

As for injectors, if your not going to be tuning with a piggy back/standalone system, you won't need the bigger injectors yet. But if you still want them you will have to use SFMU

http://www.2gnt.com/nuke/modules.php?name=Sections&op=viewarticle&artid=82

If your not going to be using bigger injectors you can get away with using a vortech FMU with a 12:1 fuel to boost pressure ratio.

But here is a useful sorce when it comes to designing a fuel system for our cars.

http://www.geocities.com/vttalon/tech.html

Your going to want to bookmark that page, but if you lose it you can find in at 2gnt.com along with answers to your first question.

 

[SnoopySLR]

the second link has some wrong info. Stock injector size is 190cc @43psi.