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You are here: Showoff Imports.nl » Performance » Turbo Related » Blowoff Valves » DV+ ATMO/VTA Focus ST/Volvo/Porsche 911 Diverter Upgrade GFB

 DV+ ATMO/VTA Focus ST/Volvo/Porsche 911 Diverter Upgrade GFB - #238407
DV+ ATMO/VTA Focus ST/Volvo/Porsche 911 Diverter Upgrade GFB

DV+ ATMO/VTA Focus ST/Volvo/Porsche 911 Diverter Upgrade GFB

The VTA is a performance blow-off valve solution for Ford Focus ST and Borg Warner turbos.

If you want sound with your performance (or performance with your sound!), GFB’s VTA delivers just that! By combining the proven performance benefits of our ground-breaking DV+ with atmosphere venting, the VTA delivers an aggressive blow-off sound, improved throttle response and boost recovery, as well as superior boost holding and reliability in extreme conditions.

The factory diverter valve commonly found on these turbos has two distinct issues – reliability, and performance. Oh yeah, it also doesn’t make any noise. Here’s how the VTA addresses these problems.

Reliability – There are two ways in which the factory diverter valve can fail; the un-reinforced rubber diaphragm can rupture, and the metal valve stem that slides in the plastic cap can stick. In both cases, there is a risk to the turbocharger, as the ECU will attempt to compensate for a boost leak by increasing the wastegate duty cycle, which increases the turbo RPM significantly.

The VTA features CNC machined billet components that last a lifetime and cannot be damaged by high boost pressures or the associated increased charge temperatures.

Performance – The factory diverter valve typically operates in only two states – either fully open, or fully closed. When it opens at low boost, or during a partial throttle lift mid-corner, it causes increased lag and a noticeably non-linear boost transition, which is noticeable as a distinct “step” down in power as you roll off the throttle and the valve opens.

The VTA however allows the piston to open and close progressively in response to the amount of boost pressure present, so it only vents enough air to prevent compressor surge (the primary purpose of a diverter or blow off valve). This helps to smooth out boost transitions, making the throttle response more linear and predictable, and also minimizes lag introduced by the factory diverter valve.

VTA or DV+?

Depends if you want sound or not. Both valves are constructed with the same quality materials and valve mechanism, and both offer the same performance and reliability benefits. However, the VTA vents to atmosphere for sound whilst the DV+ recirculates the air to keep it quiet.

Why choose a VTA over a “BOV spacer”?

“BOV spacers” are cheap and they make sound. But that’s it. All the inherent performance and reliability issues you get with the factory diverter valve remain, because a spacer doesn’t change the factory diverter components or operation method in any way. The VTA improves the operation of the factory diverter valve for sound AND performance.

Key Features

» TMS Technology for faster boost recovery on gearshift and during throttle modulation
» Improved boost holding ability
» Atmosphere venting for blow-off sound
» Simple, direct bolt-on kits include everything you need to install
» Manufactured in Australia in accordance with ISO 9001
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Go Fast Bits
Go Fast Bits - http://www.gofastbits.nl
Go Fast Bits started back in 1997 designing, testing and developing GO FAST BITS. Today a wide range of innovative and high-quality blow-off valves, boost controllers, pulley kits and short shifters are available. All meticulously designed and manufactured from the highest grade materials. GO FAST BITS products are manufactured in Australia and GFB is constantly developing new and innovative products!

Showoff Imports is the official distributor for GFB parts for the Netherlands and Belgium. Currently we stock all popular products, so no waiting times! Dealers inquiries welcomed.

What makes GFB blowoff valves different and better?
Our new TMS Turbo Management System don't throw your BOOST away but INCREASES IT BY up to 40%. GFB's Turbo Management System (TMS) parts offer multiple performance benefits over factory diverter valves. We looked at the concept named ‘blowoff valve’ and took this to a whole new level! Basically the main benefits are:
MORE POWER - BETTER RESPONSE - BETTER DRIVE ABILITY - GET THE SOUND OR NOT.

How to choose a BOV
With the vast range of GFB blow-off valves, questions rise 'Which blow-off valve is the best?' and 'Which blow-off valve should I use?'
The first question is easy to answer: There isn't actually a 'best' in terms of quality. All GFB blow-off valves use the same high-quality internal components. So, provided the right BOV is fitted for your particular vehicle, they all offer the same performance benefits of improved throttle response and reduced lag. The real question is: How do you select the valve for you?

The first step to decide on 'your' BOV, is whether or not you want to hear it, and if so, how much? The following chart lists the “noise ratings” of our blow-off valve range. The final decision will then be based on how much control you want over the blow-off volume level.
GFB

Boost Controllers
GFB boost controllers use a more consistent needle-valve bleed system, which brings boost on just as fast as any ball-and-spring system, and generally more quickly than a factory boost control system. On the productpages you can find a comparison of the GFB controller to other major brands, guess who wins this standoff? GFB!
A GFB boost controller will give you the added benefit of not only being able to adjust the peak boost level, but in most cases will bring the boost on earlier, resulting in more power throughout the rev range.

Pulley Kits
The reduction in rotating inertia (we've removed about 2kg by using 6061 T6 aluminum billet) means that the engine can accelerate much quicker during the times it is making very little power before the turbo spools up. The result is better drive ability off-boost and better acceleration, which is especially useful for those with large turbos that only make power in the upper rev range. The smaller size of the crank pulley under-drives the power robbing accessories so that the upper end of the rev range is less burdened, while still allowing them to operate properly.

Short Shift Kits
The GFB Short Shifter is the same height as the factory shifter, it is the actual distance that the gear stick moves between gears that reduced.
Very simple to install. All of the installation is done from inside the car, without having to jack it up and crawl around underneath. Only a few basic hand tools are required, and the necessary hex keys are supplied.
The maximum throw reduction varies for different models. Early WRXs had a particularly long throw, so the maximum reduction with the GFB kit is around 50%, whilst on later models it is closer to 40%. In either case, it is possible to reduce the distance per gate to about 30mm. Whilst it can go shorter, the shifting force becomes too great for comfort, and some of the shift feel is lost.


Download the GFB 2011 Catalog here:


Link to Youtube video about GFB in general:


Link to Youtube video showing a demo of the TMS Blowoff Valves on a GTR:


Youtube video about the benefits of TMS valves vs normal blowoff valves:

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Details
Itemnumber 238407
Shipping cost
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Manufacturer Code T9454
Estimated Delivery Time: Local stock.
Showoff Price: €155,00

Applications for this product
Brand  Model  Years  Trim  
Ford   Focus   2008-2010 (MK2.5)     
Ford   Focus   2011-2013 (MK3)     
Ford   Focus   2014-2018 (MK3.5)     
Porsche   911 Model 997   2005-2012     
Volvo   C30   -     
Volvo   C70   -     
Volvo   S40   -     
Volvo   V50   -     

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