Q50 60 boys have been pushing these VR30s to 700+ HP for some years now. Just look on instagram/YouTube. They did the R&D for us. Now you got Qzilla with 750HP PI&DI VR30DDTT stock internals doing his thing. Sky is the limit. Remember nissan built this motor to be efficient yes but still...
Full down.pipes should be used only when upgrading to bigger turbos my friends. When going above 500HP for bigger gains up too 700+ along with FBOs, Expert Tuning, Stage 2-4 Injectors, HPFP LPFP, Fuel system upgrades and Flex fuel if you dont go Port Injectiom route. Direct Injection requires...
Tuned VR30DDTTs should do this! And have 2000 mile oil changes intervals especially if u using Flex fuel to reduce sludge (which can cause the oil Solenoid to become inoperable) and water in fuel.
I'm getting mine unplugged. Race box recommended and RT Tuning is doing my build as we speak while the engine is dropped for turbos upgrade and power mods install. The tuner says they can eliminate any codes permanently and it won't affect my emissions and inspection with my State yearly tests...