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What’s so Special About GFB Venting Bias System?

1. GFB’s patented Venting Bias Adjustment System is the only one of its kind in the world. 

2. By using an internal rotating sleeve, the opening of both the recirc port and the atmosphere port can be infinitely adjusted. 

3. 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.

4. 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.

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.
• It retains ECU CONTROL for the fastest possible operation.
• 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.

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