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Originally Posted by MrSelfDestruct
It looks unneccesarily complex, and I think that thermal efficiency would drop exponentially with the addition of each sequential boosting device. I'll stick with a twin-turbo setup if I'm going for max power.
I think that your'e correct to assume that the turbo will help offset low-end power due to the large parasitic effect of the supercharger below the torque band.
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its a roots type positive displacement supercharger, so it boosts rigth off idle, then the turbo kicks in at higher rpms, after turbo lag has passed.
i dont think thermal efficiency would drop, as long as they had seperate inlets and intercoolers for each poweradder.
also im positive that a single turbo would out preform a twin tubo on the same application, twins just have less lag