OEM VQ35HHR and VQ37VHR Fuel Injector Sizes
 

I can't seem to find the flowrate specs on the OEM 350z and 370z fuel injectors.

I'm currently getting up to 95% duty cycle (between 6,700 RPM and 7,700 RPM) on the stock fuel injectors while running a consistent 12.3 - 12.5 AFR.

I know I don't need a giant jump up in flow rate but i'm at the limit for duty cycle and looking to open up the intake path some more.

If the 370z has a fuel injector 10% or so higher flowrate then it would be a cheap option for some safety margin.

HR - 335cc @3.5bar
VHR - 384cc @51psi

I have a set of GTR injector that i'm installing soon and they are rated around 570cc. I got it for $220 shipped.

I have some 440s would sell ya.

don't the GTRs have a really good spray pattern?

Yes they do and it is decently price as well. I'm selling my set now $225 shipped, they are rated at 560cc. Going with a 700cc injectors now.