Go Fast Bits Hyundai/Veloster/KIA DVX Dual Venting Blow-Off Valve
Go Fast Bits Hyundai/Veloster/KIA DVX Dual Venting Blow-Off Valve
Go Fast Bits Hyundai/Veloster/KIA DVX Dual Venting Blow-Off Valve
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Go Fast Bits Hyundai/Veloster/KIA DVX Dual Venting Blow-Off Valve

Go Fast Bits
In stock
$299.00 $269.10
The DVX is not just a noise maker (like BOV spacers) – by modifying the valve...
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Go Fast Bits Hyundai/Veloster/KIA DVX Dual Venting Blow-Off Valve
  • 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.
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.

Furthermore, these benefits won’t cost you the Earth! Rather than throwing the entire factory diverter valve system in the trash (like other manufacturer’s “solutions”), the DV+ keeps what works, and replaces what doesn’t.


The T9661 is a dual venting direct factory replacement for the valve used on Hyundai, Veloster and Kia


There are many “BOV spacers” on the market that make noise. However, they do this simply by using the factory diverter valve and redirecting the air to atmosphere. Therefore, the performance deficiencies of the factory diverter valve design remain, and furthermore, the flow
capacity of the factory diverter is significantly reduced because of the small venting holes used in these BOV spacers.


Other BOV kits eliminate the ECU control entirely, using pure manifold vacuum control instead. Whilst there’s nothing particularly wrong with this (that’s how the majority of BOVs work), the ECU control is MUCH FASTER, able to detect and respond to much SMALLER THROTTLE TRANSITIONS and, since it’s available, why wouldn’t you use it?


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 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!


  • HYUNDAI Veloster 1.6 GDI Turbo 2012-2018
  • HYUNDAI Tucson 1.6 GDI Turbo 2015-On
  • KIA Optima 2.0T-GDI 2015-2019
  • KIA Cerato Koup 1.6 Turbo 2013-2016
  • HYUNDAI Sonata 2.0 T-GDI 2014-2019
  • HYUNDAI Genesis Coupe 2.0T 2013-2016

Products from this brand are not typically kept in stock, and are made-to-order.

Returns Policy

Following your order, a representative will contact you to explain the order process and provide an estimated timeframe for delivery. Following the discussion, should you choose to continue with the order, please note that as the parts will be made for you, there will be no further option for cancellation (if there are any concerns regarding lead time, please advise us immediately during the initial follow-up). At the time of the initial contact and after being informed of the estimated lead time, should you choose to cancel, you may do so within 1 business day.


Product price is including shipping from Japan to our warehouse in Southern, Ca. A separate shipping invoice will be billed to you if you wish to ship domestically once the product arrives and is inspected. As these products must be manufactured and then imported from Japan, lead times will vary.

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