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Originally Posted by sidewaysKA-T
have you ever heard of a centrifugal supercharger? its a belt hooked up to the compressor side of a turbo. you build boost with revs.
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Those have got to be the worst froms of forced induction, You get shit for boost on the bottom end, and only a few rpms of real boost. I think an 8psi kit for the 350z has 2psi at just above idle.
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If you'd want to build a twin-charged setup, follow how vw did it...sorta. I had thought on a setup similar before. Basically bot the turbo and SC would be separate, feed air into a "Y" pipe with a plate that could close of one pipe or the other. SC would be used for bottom end (obviously) and as the turbo came on enough to shut off the SC, the bypass on the SC would be opened and the plate that was originally blocking the Turbo from working now blocks the SC.
Basically the side with more air flow/pressure would cause the other side to close off. The turbo side on low revs, and the SC side on high revs. The purpous of the plate is mostly to have a nice balance during the transition, rather than a funky jerk, or a range of revs where there's not enough boost.