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Prova High Pressure Bypass Valve
2015+ WRX / 2014+ Forester
Ships for free in the 48 states
Prova Description (translated from their Japanese site)
Increase the spring rate than the genuine products, it is a bypass valve to increase the pressure resistance performance.
The bypass valve opening pressure by improving about 20% pure ratio, improved turbo response, to prevent the deterioration of the fuel consumption not derail the air flow sensor measuring the intake air quantity and circulation type is recirculated to the intake. You can also expect dress-up effect of the engine room by the beautiful finish of black anodized aluminum.
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