BMW M3 Forum (E90 E92) - View Single Post - Vortech v-3 rebuild and impeller upgrade

darkbmw · 09-19-2020, 01:03 PM

Boost/psi is resistance, the manifold will fill faster. Cfm is how much air it moves into the manifold, so more cfm. So a larger supercharger that makes 6 psi more cfm will make more power than a 6 psi supercharger which is small.

09-19-2020, 01:03 PM	#5
darkbmw Second Lieutenant 105 Rep 278 Posts Drives: slow m3 Join Date: Jun 2012 Location: orlando fl iTrader: (0)	Boost/psi is resistance, the manifold will fill faster. Cfm is how much air it moves into the manifold, so more cfm. So a larger supercharger that makes 6 psi more cfm will make more power than a 6 psi supercharger which is small.
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