GFB VTA T9488 Diverter Valve (BOV sound) for Mercedes applications

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 GFB 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 VTA shares the successful DV+ design philosophy:

“Keep what works, replace what doesn’t”

This means GFB retains ECU control and the solenoid from the factory diverter to ensure the fastest possible response time, without the added and unnecessary cost of replacing the solenoid like some brands do.

The weak part of the factory diverter has always been the plastic valve mechanism – this is the part GFB Engineers replaced. The VTA features CNC machined billet components that last a lifetime, and the valve operation method for better performance is also changed. The factory diverter valve can only operate in two states – open, or closed. When it opens fully at low boost, or during a partial throttle lift mid-corner, it causes increased lag and a noticeably non-linear boost transition.

GFB pioneered the use of “pilot operation” in the DV+, which works by re-purposing the factory solenoid to control the pressure behind the piston rather than the piston itself. This allows the solenoid stroke to be much shorter, speeding up the response time and increasing the actuation force. More importantly, it allows the piston to open and close progressively in response to the amount of boost pressure present, which smooths boost transitions and reduces the lag caused by the factory diverter valve.

It is this design philosophy that makes the VTA not only the best performing blow off valve solution, but also the best value on the market.

Sound – The VTA, as its name suggests, vents the air to atmosphere for maximum “whoosh” noise when you lift off the throttle.

Key features:

• TMS Technology for faster boost recovery on gearshift and during throttle modulation
• Improved boost holding ability
• Atmosphere venting for blow-off sound
• Retains ECU control
• Simple, direct bolt-on kits include everything you need to install
• Manufactured in Australia in accordance with ISO 9001

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 diverter valve in any way. The VTA improves the operation of the diverter valve for sound AND performance.

Why choose a VTA over a kit that includes a solenoid?

Because there’s no performance benefit to replacing the factory solenoid, only a much higher price! If a VTA with the factory solenoid can open in a couple of hundredths of a second, why pay more than you need to?

These engines come from the factory with no diverter valve of any kind, which results in turbo compressor surge every time the throttle is closed after boosting.
The intake is acoustically tuned to suppress the fluttering sound of compressor surge, but it does not eliminate the effect of pressure pulses – that is what diverter and blow-off valves were originally designed to do.

The GFB VTA re-introduces a blow-off valve into the system, which eliminates compressor surge to protect the turbo, and delivers the signature blow-off “whoosh” when lifting off the throttle.

The VTA clips directly into the turbo’s charge piping,  replacing a short plastic joiner with a billet CNC machined section onto which the VTA mounts. The kit also includes a boost tee and vacuum hose that clips onto one of the manifold vacuum ports to source a vacuum signal for the VTA valve.

Application:

MERCEDES-BENZ S-Class S400 Note : Two Valves Required
MERCEDES-BENZ E-Class W213 E200/E250/E300 (2016-2019) Note : M270/M274 ENGINES ONLY
MERCEDES-BENZ E-Class W213 E200/E250/E300 (2016-2019)
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ GLC 200/250/300 (2015 - 2021)
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ GLC 200/250/300 (2015 - 2021)
MERCEDES-BENZ GLA-Class X156 GLA180/GLA200/GLA220/GLA250 (2014-2019)
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ E-Class W212 E200/E250 (2009-2016)
MERCEDES-BENZ A-Class W176 A180/A200/A250 Turbo (2012-2018)
MERCEDES-BENZ A45 AMG (Facelift Models Only) (2015 - 2018)
MERCEDES-BENZ CLA45 AMG (Facelift Models Only) 2016 - 2018
MERCEDES-BENZ E-Class W212 E200/E250 (2009-2016)
MERCEDES-BENZ B-Class W246 B180/B200/B220/B250 (2011-2019)
MERCEDES-BENZ CLA-Class C117 CLA180/CLA200/CLA220/CLA250 (2013-2019)
MERCEDES-BENZ E-Class W212 E200/E250 (2009-2016)
MERCEDES-BENZ SLK 200/250 (R172)
MERCEDES-BENZ SLK 200/250 (R172)
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ C-Class C180/C200/C250/C300 Turbo (Not Kompressor) 2011-2018
MERCEDES-BENZ CLA-Class C117 CLA180/CLA200/CLA220/CLA250 (2013-2019)
MERCEDES-BENZ B-Class W246 B180/B200/B220/B250 (2011-2019)
MERCEDES-BENZ B-Class W246 B180/B200/B220/B250 (2011-2019)
MERCEDES-BENZ A-Class W176 A180/A200/A250 Turbo (2012-2018)
MERCEDES-BENZ A-Class W176 A180/A200/A250 Turbo (2012-2018)
MERCEDES-BENZ GLA-Class X156 GLA180/GLA200/GLA220/GLA250 (2014-2019)
MERCEDES-BENZ GLA-Class X156 GLA180/GLA200/GLA220/GLA250 (2014-2019)
MERCEDES-BENZ CLA-Class C118 CLA180/CLA200/CLA250e 1.3T (2019-On)
MERCEDES-BENZ A-Class W177 A160/A180/A200/A250e 1.3T (2018-On)
MERCEDES-BENZ GLB-Class X247 GLB180/GLB200 (2018-On)
MERCEDES-BENZ B- Class W247 B160/B180/B200/B250e (2018-On)
MERCEDES-BENZ A-Class W177 A160/A180/A200/A250e 1.3T (2018-On)
MERCEDES-BENZ C63 & C63 S AMG 4.0TT (2016-On) Two Valves Required
MERCEDES-BENZ S63 AMG 4.0TT (2018-2020) Two Valves Required
MERCEDES-BENZ GLC63 & GLC63 S AMG 4.0TT (2018-On) Two Valves Required
MERCEDES-BENZ E63 & E63 S AMG 4.0TT (2018-On) Two Valves Required
MERCEDES-BENZ E63 & E63 S AMG 4.0TT (2018-On) Two Valves Required
MERCEDES-BENZ G63 AMG 4.0TT (2018-On) Two Valves Required
MERCEDES-BENZ C-Class C300 2.0T (2019-On)
MERCEDES-BENZ AMG GT 4.0TT (2019-On) Two Valves Required
MERCEDES-BENZ AMG GT 4.0TT (2019-On) Two Valves Required
MERCEDES-BENZ GLC43 AMG 3.0TT (2019-On) Two Valves Required
MERCEDES-BENZ CLA35 AMG 2.0T (2020-On)