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Message: [QUOTE="jcain, post: 1123071, member: 11640"] Every turbo has a compressor map that details it's CFM (lb/min) per it's design. When the boost gauge is showing 30psi, that's a measure of pressure (restriction) at the intake. CFM is the real winner though (the measure of volumetric flow) when it comes to comparing turbo's on the same engine at the same boost (psi, pressure). A larger turbo flows more CFM at the exact same pressure because it's a better compressor, by efficiency. By being able to do the same amount of work with less introduction of heat, it has essentially made a denser charge and flows more CFM at the exact same pressure (boost,psi). It has also done this with less back pressure on the shaft and once again free'd up more power. [/QUOTE]

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