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undivided exhaust manifold - Twin Scroll vs nonTS housing

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Hi, I’m curious if if I use an undivided manifold, is there any difference with spool depending on the TS or nonTS exhaust housing used? Can the housing with twin scroll be worse in that case acording to spool?

Thanks

Your turbo will act as a single scroll, as exhaust gas pulses from all cylinders will mix before going to the turbine wheel. You will loose the benefit of the twin scroll in term of spool.

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