Boost Pressure Control Valve [T9404]

VTA T9404 delivers a truly unique blow-off sound for your Ford! The VTA is a performance bolt-on blow-off valve solution for Ford vehicles with an electronic factory diverter valve. Choose Your Sound: With the removable extended trumpet, you can configure the T9404 to give you either a classic “whoosh”, or the loudest, most unique whistle sound you’ve ever heard! Customise Your Sound: The T9404 also features adjustable spring pre-load so you can fine tune when it blows off, and for how long. A softer pre-load allows the valve to blow off for longer and at lower engine loads. If you prefer to hear it only at higher engine loads you can use a firmer pre-load. Low-Profile, Easy Installation: Using our integrated solenoid design stacked in an “over/under” configuration, the super-low profile allows clean and simple fitment in the factory location. Is this the right valve for me? If you’re looking for a loud and unique blow off sound, the T9404 is for you! You can run it with or without the trumpet to change the sound, but either way “subtle” is not a word to describe this valve! For a more subdued blow off sound, check out our T9484 VTA. If sound is not your thing, the T9384 DV+ is what you’re looking for!