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You seem to be assuming that an aftermarket BOV is capable of more airflow simply because it is "aftermarket" and therefore must be better.
I haven't tested a stock recirc to any BOV but I am willing to bet everyone would be surprised who follows the above assumption.My approach to thinking of a BOV is that in order to make their gastly noise, there must be an inefficient restriction to cause the velocity to increase to the point of noise production. This is similar to an air nozzle on the end of a compressor hose, noisy and needs a lot of pressure for any substantial volume of air to pass.
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