when the pedal is to the metal there is no vacuum, and the pcv is doing nothing. and that gallon of water per gallon of gas-99% of it goes out the exhaust
So what percentage of the time you drive is spent at zero vacuum? If you have a drag car you can aspirate crankcase pressure to the headers or do the best solution which is use an external vacuum ventilation system like shown in this link which I just posted above this also.
