Audi B9 A4 Blow Off & Diverter Valves (2017-2023)

The factory diverter valve can handle a lot. DV kits are designed to recirculate air back in versus venting the air to atmosphere like a BOV kit. No matter if you are looking to improve your throttle response with an aftermarket DV such as GFB or hear that turbo blow off "pssh" sound we have a variety of aftermarket DV or BOV options for the 2017-2023 Audi A4 B9 platform. 

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