| ..then they are probably the best option. However, seeing as they are anywhere up to 18 years old now, they don't perform as well as they did when new. MikeH (aus300zx) tested his and they wouldn't hold even 10psi. Aftermarket BOV's in full recirc mode are probably the best option for higher than stock boost levels if your recircs aren't in A1 condition.
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