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Old 04-13-2006, 12:30 AM   #14
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Actually with regards to superchargers, there's two types, Positive Displacement and Centrifugal.

Positive Displacement (similar to TwinScrew) superchargers give you instant full boost (or at least a really quick build up to full boost) once you step on the throttle.

With the centrifugal supercharger, the boost builds up linearly.

Personally I like the power delivery of the Twin Screw over Centrifugal, but off the top of my head they don't have a kit out there yet for the E46 M3's utilizing the Twin Screw blower.
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