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I know I don't fully understand EVERYTHING there is to know about turbos and boosting. I know there's alot to be said on how much a turbo flows air - CFMs.
So my question is how can a bigger turbo, say 400-500cfm, pull harder at the same psi setting, say 12psi, as a stock turbo and still only be 12 psi? I know bigger turbos flow more, thus more power, but how can it still be only 12 psi? My new turbos puller harder at 12psi than the stockers did at 15.
Any help on this is greatly appreciated as I'm having trouble comprehending the whole thing.

So my question is how can a bigger turbo, say 400-500cfm, pull harder at the same psi setting, say 12psi, as a stock turbo and still only be 12 psi? I know bigger turbos flow more, thus more power, but how can it still be only 12 psi? My new turbos puller harder at 12psi than the stockers did at 15.
Any help on this is greatly appreciated as I'm having trouble comprehending the whole thing.