Wow this looks awesome! Nice work and good job taking the initiative! So many of these threads start and end with couch theories, good to see that you area actually trying it!
As for keeping it simple with pre-existing parts out there, considering that the VQ37 has such a high compression, you could just run the GTR turbos on wastegate boost, and not even need a boost controller. This is assuming the turbos are internally gated at something low like 6-7 psi. Do you know what the wastegate boost is set at for these turbos?
As for controlling AFR, both Uprev and ECUtek would be able to handle it. And if you're just shooting for 450-500whp, you could just get away with a pump and injectors. You wouldn't need a return system until you start going higher than that.
This is exciting!
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