Philosophically, ZN6 nearly requires four throttles IMO. Three years in though, and I don’t think that anyone has actually done it right. By my reckoning, Toyota’s D4-S system is mission impossible for all the major standalone systems. And since ITB’s typically run off a MAP sensor and all the commonly available individual throttle bodies are cable operated, then relying solely on the stock ECU is problematic as well.
Yet EMC Engineering has done just that… Looks like the individual banks of throttles are activated by the stock electronic throttle body, which is not so well disguised underneath some fake bling. And yes, that’s the stock MAF sensor sitting in the velocity stack for cylinder 1. This plus EcuTek could theoretically run the engine…
… But I’m not quite sure it could actually do it well.
An alternative would be to hide the electronic throttle body under a gigantic red four legged monster wearing black socks, and then stuff the MAF down it’s throat. This apparently actually works… but I’m not sure that’s my thing either. Let’s face it, quad throttles are largely about aesthetics.
There is hope though… as finally some real FA20 development appears to be underway all over the globe. Cams? FB25 hybrids? Intake Manifolds? Headers with massive forced induction type gains? And speed density tuning with EcuTek? A real quad throttles solution is inevitable.
I’m a little confused: on the first example, they are using a sensor that used to measure all four cylinders upstream… into just one cylinder?
With a tune, the signal, or the amount of air measured can be scaled accordingly, assuming that all four cylinders flow the same (which they don’t but…).
In addition, (not understanding Japanese all that well) I think there were some problems with flow, or measuring it accurately given that the volume of the stack is so small. That’s why the red monster came about.
After a week of research, I’m pretty close to buying myself some black top, or maybe SR20 ITB’s and making a go of it. Too bad about my commitment to C-street.
A week later and I still regularly play this video just to listen. 😐