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      05-28-2011, 03:08 PM   #7
pbonsalb
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Drives: 18 F90 M5, 99 E36 M3 Turbo
Join Date: Feb 2011
Location: New England

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No, a centrifugal pullied for max boost of 4 psi at 8400 rpm will not make full boost at 5500 rpm. It will make full boost only at 8400 rpm.

At 4200 rpm, it will make about 2 psi. This is the nature of the centrifugal supercharger. There is nothing you can do about it. The boost curve rises faster and faster as you approach redline.
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