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      06-12-2009, 04:22 PM   #5
Dan335i
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Drives: 07 335i coupe 6MT,w/sp. pack.
Join Date: Oct 2007
Location: orange county NY

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The tighter you turn the screw and nut on top of the bov,the tighter your making the spring.In other words your making it so tight as to hold the max amount of boost your bov will hold.Doing that all your gonna get is bov flutter,and your car will run like crap everytime you let your foot off the gas when shifting.Depending on how much boost your running you should start off on the weakest setting,and then turn the screw (stiffening the spring) little at a time until your car is running great and of course holding the boost you have.