ever since I vented both valve covers ive had positively no oil consumption or loss. didn't affect my tune nothing. motor can finally breath like the good general intended. smell no oil in vents no oil smell under the hood when I raise it when its still hot. fantastic. you turbo and blower guys do it all the time don't you? vent somewhere don't you to avoid crankcase back pressure? dropping gears and disappear. the oldman...