GFB VTA performance Diverter Valve W Trumpet BOV sound (T9401)

The VTA serves as a high-performance blow-off valve solution tailored for Audi or VW vehicles equipped with an electronic factory diverter valve.
Choose Your Sound: With the detachable extended trumpet, you can set up the T9401 to produce either a classic "whoosh" or the most striking, loud whistle sound you've ever experienced in a Euro vehicle!

Customise Your Sound: The T9401 is also designed with adjustable spring pre-load, allowing you to fine-tune when it releases pressure and for how long. A softer pre-load enables the valve to release for a longer duration and at lower engine loads. If you want to hear it only during higher engine loads, you can opt for a firmer pre-load.

Low-Profile, Easy Installation: Thanks to our integrated solenoid design arranged in an "over/under" configuration, the ultra-slim profile ensures a clean and straightforward installation, even if your aftermarket intake occupies all available space!