GFB’s DVX adds dual venting outlets along with their patented Venting Bias Adjustment System. So not only do you get IMPROVED BOOST HOLDING and THROTTLE RESPONSE, you have total control over your BLOW-OFF SOUND VOLUME!

Please note that this valve replaces the factory electronic bypass valve and operates via a vacuum / boost reference.  You will require a custom tune (available separately on the website) and you must add a vacuum / boost reference port by drilling / tapping the factory intake manifold to install a barb hose adapter for a vacuum line to connect to the DVX valve.  I recommend installing a 1/8″ NPT to 1/4″ brass hose barb fitting (90 deg elbow) by drilling with a 21/64″ drill bit and tapping the hole with 1/8-27NPT Tap.

WHAT MAKES DVX DIFFERENT TO ANY OTHER VALVE THAT GOES “WHOOSH”?

• The DVX is not just a noise maker (like BOV spacers) – by modifying the valve operation method it offers the same PERFORMANCE BENEFITS that the DV+ does.
• No other blow off valve has the advantage of GFB’s Venting Bias Adjustment, allowing you to alter the blow off sound simply by moving the adjustment lever.
• Built to last.

GFB’s DV+ design solves the longevity and boost leaking issues that are common with factory diverter valves, and also changes the operation method to “pilot actuation” (read about this below) to ensure better
performance on stock or modified engines.

WHAT’S SPECIAL ABOUT OUR VENTING BIAS SYSTEM?

GFB’s patented Venting Bias Adjustment System is the only one of its kind in the world. By using an internal rotating sleeve, the opening of both the recirc port and the atmosphere port can be infinitely adjusted. This means that you’re not stuck with a fixed 50/50 or 100% atmosphere venting ratio; you can change it to whatever you want! As an additional benefit, because the atmosphere outlet is a single large port rather than a series of small holes, the venting sound is much DEEPER AND LOUDER than it is with a BOV spacer.

THE BOTTOM LINE IS…

The DVX offers a TRUE PERFORMANCE improvement, INCREASED BOOST-HOLDING ability, and a blow-off sound that is COMPLETELY ADJUSTABLE from factory-silent to ear shattering!