Besides the noise, why else upgrade the stock Subaru bypass valve? The stock unit is known for leaking and having inconsistent boost pressure that will prevent your Subaru to perform at its best. Moreover the GFB BOV can return the engine to peak boost up to 30% faster than the stock unit when shifting gears.
Overall its a great mod to have for optimal performance.
- 2002,2003,2004,2005,2006,2007 Impreza WRX
- 2004,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014 Impreza WRX STi
- 2015, 2016, 2017, 2018, 2019, 2020 WRX STi
- 2006,2007,2008 Forester XT
In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on final sales, special orders, opened, installed, incomplete, or otherwise used products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).
Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.
For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.