Okay, so the last thing I need for my set up is injectors. I originaly wanted to use DSM 450's but have no solder or soldering skills. So I just decided I will go with saturated 440's. I was gonna buy RC's until I found the Precision Injectors. So when I started doing some research on them it seems like some people couldn't fit them into their stock fuel rail and just wanted to know if this was true? Any help or info on these injectors would be awesome. Thank you.

 

I have precision 440's on my ls/vtec turbo setup.....no complaints.

might be kinda big on your z6, though.

 

on a d16 zc tubro setup on 7 pounds what psi do i need to be runing with my 440cc can anyone help me out

 

They will work perfect for your z6 turbo setup.
Concerning fuel pressure, 38-45 psi should work just fine.