Part No: T9351 Category:

DV+ Blow off Valve or BOV/ diverter valve with TMS advantage. Protected by Patents in United States of America, China & Australia PCT Patents Pending

(7 customer reviews)

AUD $167.00

Note: This product has fitment notes for some models Click Here for more information
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Introducing the new DV+ for late-model VAG and

Euro applications!

GFB’s DV+ solution couldn’t be simpler – keep what works and replace what doesn’t.

BEWARE of counterfeit products; ONLY buy from authorized dealers on our website

Patents and Design Patents U.S.A, Australia, China, PCT Patents Pending

  • Retains the factory solenoid coil for seamless integration
  • Replaces plastic valve parts with metal for reliability and strength on chipped engines
  • Direct-fit replacement with GFB’s TMS benefits
  • Exclusive “pilot-actuated” valve mechanism for rapid response at high boost

GFB expands the DV+ range with a direct-fit solution for the weak factory diverter valve used on many European vehicles.

The solenoid coil itself from the factory-fitted valve is great (the ECU opens it faster than any pneumatic valve so why replace it?), but the weak point however is the valve mechanism itself. So GFB’s DV+ solves this problem by replacing just the valve parts with an anodised billet aluminium housing fitted with a brass piston machined to exacting tolerances.

The end result is sharper throttle response, lightning-fast valve actuation, and it will hold as much boost as you can throw at it. Read all about the DV+ story on the next page.

Other manufacturers’ products involve replacing the entire system with a traditional pneumatic valve, requiring long vacuum hose runs, additional parts for tapping into the intake manifold vacuum, plus either a different solenoid valve to actuate the pneumatic valve or a ballast resistor to plug into the OE wiring loom. All these additional items result in a product that is slower, less responsive, more expensive and takes much longer to install.

GFB’s DV+ solution on the other hand is more responsive, less expensive, easier to install, and doesn’t cause compressor surge/turbo flutter. Oh, and it doesn’t require different springs or frequent re-builds.

The DV+ story: Better performance – more reliable

Many late-model European cars use ECU controlled solenoid-type diverter valves. This is a good concept because the valve can react very quickly and it only opens when it needs to.

However, there are some problems with these valves. There are typically two types of solenoid-actuated diverter valves found standard on VAG and European cars, both of which have their shortcomings.

Common OE Problem #1
The diaphragm types are commonly known to rupture, especially when boost and temperature are increased as a result of chip tuning.

Common OE Problem #2
The plastic piston-type leaks far more than most people realise (by design, not from wear), and doesn’t always close after a high-boost gear shift.

Additionally, in both cases, the solenoid on the OE diverter is directly connected to the valve mechanism, which is not ideal because neither it nor the return spring are strong enough to open and close the valve reliably at high boost.

With problems like this, you can see why other aftermarket manufacturers assume the best solution is to replace the factory diverter entirely. Unfortunately though, whilst their replacement kits might be stronger than the factory diverter, their slower response speed and lower flow do not justify the extra cost and complexity – more of a compromise than a solution.

GFB has taken a different approach to deliver a complete solution that solves existing problems and improves performance, without compromise or a hefty price tag.

The DV+ addresses the factory valve problems with a very simple and elegant solution. Keeping the factory solenoid retains all the benefits of the stock system, and replacing the valve parts with indestructable metal components ensures strength and reliability no matter how much boost you run.

That’s not all. Rather than using the solenoid to directly actuate the valve, we’ve introduced a unique “pilot-actuation” system. This means the solenoid controls the air pressure that is used to open and close the piston, so it doesn’t matter how much boost you push through it, the DV+ will open and close reliably without ever exceeding the solenoid’s capability.

This feature also improves on the factory system by opening the valve progressively in response to boost pressure, so it only opens as much as required to get the job done (the factory valve simply opens and shuts, it cannot partially open if boost pressure is low), resulting in better throttle response.

Unnecessary replacement kits are a compromise, not a solution

Protected by Patents in United States of America, China & Australia

PCT Patents Pending

When you just want  performance

European manufacturers are pushing their engines to the limit. Get a DV to match.

GFB’s DV+ diverter valve range offers a direct-fit performance solution for the weak factory diverter valves used on many modern vehicles.

PCT Patents Pending

By retaining the factory ECU control and recirculating the vented air, the DV+ is a purely performance-oriented product that offers the following benefits:

  • Sharper throttle response
  • Faster boost recovery on gearshift
  • Solves boost leaking issues
  • Built to last

Make sure you purchase ONLY from our approved dealers to be sure you are getting a genuine product. We are aware of counterfeits on Ebay and Amazon and getting these removed but they do not notify any purchasers of counterfeit product After purchasing.


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  • 7 reviews for DV+ Blow off Valve or BOV/ diverter valve with TMS advantage. Protected by Patents in United States of America, China & Australia PCT Patents Pending

    1. Chris

      Have had this product installed on my Stage 2+ Golf R for awhile now and love it, boost comes on harder and stays on without any leaks or spikes. This has basically fixed the leaking and boost issues my stock DV couldn’t seem to cope with. Unit is nice and stealth & retains the OEM ECU operated control rather than a full mechanical unit like some other units out there, so therefore this unit reponds faster. Overall love the product, does what it is meant to for half the price of any other product out there. Good work GFB, one happy customer 🙂

    2. Nicholas

      This product is great!I had been searching for a BOV/DV upgrade for my Audi S3 for a little while and I stumbled across this. I am very pleased with the results.The results surprised me. There was an instant improvement. The turbo spools up quicker

    3. Harro


    4. UK

      All other DV’s are inferior to a DV+
      DV+ is better in every catagory, and is cheaper than almost all alternatives

    5. Tom

      Installed this in my MK5 GTI and immediately noticed a difference – Throttle is more responsive and the car is less jerky from standstill

    6. Harry

      This Product is brilliant!!!! installed it on my 1.8T 6C Polo GTI Manual (in 10MIN). A lot less jerky in low RPM and on takeoff, boost coming on quicker and holding stronger. and love the new small psst noise when lifting. Car is stock standard apart from the DV+ and makes a huge difference in everyday normal driving not just flogging it.

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