GFB Respons Dual Port Variable BOV
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GFB Respons Dual Port Variable BOV Blow Off Valve
GFB has been refining dual port blow off valves since 1999, and the Respons is their smartest version yet. Using a patented venting bias adjustment system, it lets you dial in exactly how much air vents to atmosphere versus recirculates, giving you the sound you want without the stalling or fuelling issues that plague poorly designed valves. It's a great fit for the Subaru WRX, Forester XT and Levorg platforms.
This listing covers the Subaru WRX VA (2015-2021), Forester XT SJ (2013-2018) and Levorg VMG (2014-2021). SKU T9007. GFB offers direct bolt-on kits for these platforms, fitting straight into the factory location with no adaptors or modifications required.
Key Features
- Adjustable venting bias — anywhere from 100% recirculation to 100% atmosphere
- Up to 30% faster boost recovery on gearshift using GFB's TMS principle
- Balanced piston design prevents forced opening under high boost
- Suitable for sensitive MAF-based fuelling systems
- Direct bolt-on fitment for listed applications
- Improved throttle response and boost holding
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please ensure your vehicle's year, trim level, and configuration are confirmed before ordering.
Not sure if this suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | Forester XT | SJ | - |
| Subaru | Levorg | VM | - |
| Subaru | WRX | VA | - |
Technical Specifications
| Spec | Value |
|---|---|
| Valve Type | Dual port variable blow-off valve (BOV) |
| Piston Design | Balanced piston — boost pressure acts on both sides, preventing forced-open operation at high boost |
| Venting Bias Adjustment | Fully adjustable from 100% recirculation to 100% atmosphere venting, and anywhere in between |
| Boost Recovery | Up to 30% faster than a factory diverter valve on gearshift (per GFB testing) |
| Fitment Type | Direct bolt-on to factory location on compatible kits — no modification required |
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