Subaru WRX 01-07 /STI 01-11, Forester 06-08 Respons TMS GFB

Hold on, it gets better. The Respons isn’t just a noise-maker. It also;

• Offers better throttle response
• Faster boost recovery on gearshift
• Unlimited boost-holding!

For example, using GFB’s TMS (Turbo Management System) principle, tests show that the Respons can return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below)

How GFB’s Venting Bias Adjustment Works

Twisting the adjusting ring opens up the atmo port, whilst the recirc port is simultaneously closed.This results in possible venting ratios ranging from 100% recirc, right through to 100% atmosphere and anywhere in between.

Available In A Huge Range Of Universal And Direct Bolt-On Kits

When we say “bolt-on”, that’s EXACTLY what we mean. Everything you need is included, it fits directly in the factory location (not on a separate adaptor), and no modifications to the car are required.

Performance AND sound without compromise!

• Adjust the volume of your blow-off sound
• Up to 30% faster boost recovery on gearshift
• Get the blow off sound without the hassles - even on sensitive MAF-based systems
• Hold unlimited boost pressure
• Direct bolt-on kits available

If Everything You’ve Heard Tells You A BOV Won’t Work On Your Car, Try A GFB Respons - You Will Be Surprised!

“How does a GFB Respons improve performance?”

Boost holding

Unlike factory bypass valves, or other brand valves that require different springs for different boost levels, a GFB valve CANNOT be forced open by high boost!

The balanced piston design in a GFB valve uses boost pressure on either side to cancel out the forces. Therefore it doesn’t matter how much boost you run, you can be sure a Respons valve will deliver all of it to the engine.

Throttle response and boost recovery

GFB’s TMS (Turbo Management System) principle is based on an operating method that is different to all factory bypass valves, which can be summarised as:

A factory bypass valve is open until required to shut.

A GFB TMS valve is shut until required to open.

This difference in operating methods means that the GFB valve only vents when required, and only enough air to prevent compressor surge.

For example, during a gearshift it is possible to preserve a small amount of boost pressure for a short duration. Then, when the throttle is then re-opened, peak boost is reached faster than if all pressure is lost (as is the case with the factory valve that remains fully open too long).

Applications also suits:

• This Part Fits:

   

  Year	Make	Model	Submodel
  2008	Subaru	Forester	Sports 2.5XT
  2004-2005	Subaru	Forester	XT
  2006-2008	Subaru	Forester	XT Limited
  2005	Subaru	Forester	XT Premium
  2001	Subaru	Impreza	L
  2001-2004	Subaru	Impreza	Outback
  2005	Subaru	Impreza	Outback Sport
  2001-2005	Subaru	Impreza	RS
  2002-2004	Subaru	Impreza	TS
  2002-2007	Subaru	Impreza	WRX
  2006-2007	Subaru	Impreza	WRX Limited
  2004-2014	Subaru	Impreza	WRX STI
  2007,2011-2014	Subaru	Impreza	WRX STI Limited
  2010	Subaru	Impreza	WRX STI Special Edition
  2006-2007	Subaru	Impreza	WRX TR
  2015-2020	Subaru	WRX STI	Base
  2015	Subaru	WRX STI	Launch Edition
  2015-2020	Subaru	WRX STI	Limited
  2016	Subaru	WRX STI	Series.HyperBlue