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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
9 oxygen content and Lambda value sensor
Flow rate in excess of 1
The tank can be polished
preventing heat damage that can affect performance
Modifications Required: Use of 2008+ STI coolant crossover pipe for early models
Perrin Recirculating Blow Off Valve Red 2015-2021 WRX / 2014-2018 Forester XT YMM_2012_FRS 9 oxygen content and LambdaPerrin Recirculating Blow Off Valve Red 2015 2021 WRX 2014 2018 Forester XT Adjustable Boost Control Performance Blow Off Valve Overview The Perrin Recirculating Blow Off Valve (BOV) is a precision engineered upgrade designed specifically for the 2015 2021 Subaru WRX and 2014 2018 Forester XT. It addresses a common limitation of the OEM blow off valve, which does not fully seal until around 3 psi of boost, resulting in lost horsepower and slower turbo
