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Lots of people think like this but I have other opinions but either way.

thats fine, but remember a PV is nothing more than an on and off switch. if the size is correct it will come on as soon as the desired vac is reached. so actually on a race car that should be instantly. really no difference than a larger jet. and one less problem to have to worry about. my car see's WOT or on the idle circuit. not a lot more. now you being a street raced car is a different story.