I'm doing a turbo conversion on my r34 20de neo currently and doing some research on what these valves do, does anyone know what the system is on the inner intake manifold where the injectors seat, there's another solenoid.
Back to the butterfly in the plenum, I applied pressure to it using a compressor and it doesn't lean and just pushes the butterfly "more open", I'm thinking of trying when I've got the motor back in and comes tuning time if I hooked the actuator up to the manifold so the butterfly closes under idle and when your put of boost aka highway driving and low throttle driving then once you go into boost the butterfly will open but I'm not sure if it will open too early but I suppose boost won't come on till around 3-3.5k rpm anyway.