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      04-06-2010, 01:26 PM   #3
Jake@MOTIV
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Drives: 135i, 335i
Join Date: Dec 2009
Location: MD & NC

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The turbine housing on a twin scroll is the same as any other turbo housing except for the flange that attaches to the manifold. There will only be one downpipe as it is a single turbo. The twin scroll flange separates the exhaust gas pulses that allow better flow to spool the turbo faster however they still flow out a single outlet.

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