Quote:
Originally Posted by Black X Dahlia
I was under the influence that a BOV was efficient with high boost levels (20psi+).
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It has more to do with air volume than psi.20psi on a stock turbo or even a 16g is WAY different than running 20psi on a GT35R.Same pressure,totally different air volumes.You can also moddify the stock valve to hold up to 25psi.Mine does that just fine.You can use the old DSM trick or block of the signal passage on the stocker and redrill the passage to reference atmospheric pressure.It's way easier than it sounds.If you want a atmospheric bov,get an atmospheric bov.Just don't kid yourself into thinking you needed it or it doesn't hamper performance.All those that say it doesn't are using data provided by their butt dyno's.I use data recorded on a laptop with a wideband and basic physics of how the device works and how MAF based fueling works.Some general info but don't read into it to deep.The reference to boost pressure s relating to racing conditions.The part about normal boost levels has to do with daily driven cars,not race vehicels:
Blow-off Valves