GFB Respons Dual Port Variable Blow Off Valve
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GFB Respons Dual Port Variable Blow Off Valve - Subaru WRX/STI (GC8) MY97-98 / Nissan Silvia/180SX (S13) 300ZX (Z32) Pulsar GTiR (N14) - 35mm/30mm
GFB pioneered the dual port blow off valve back in 1999, and the Respons takes it further with a patented venting bias adjustment system. Instead of a fixed atmo/recirc split, you can dial in anywhere from full recirculation to full atmosphere venting, giving you the sound you want on your Subaru WRX/STI or Nissan turbo platform without the stalling or fuelling dramas that plague poorly matched BOVs.
This listing covers the Subaru WRX and STI (GC8) MY97-98, Nissan Silvia and 180SX (S13, SR20DET), Nissan 300ZX (Z32, VG30DETT) and Nissan Pulsar GTiR (N14, SR20DET) in the 35mm/30mm bolt on configuration.
Note: 300ZX (Z32) applications require two valves. Pulsar GTiR (N14) fitment requires the softer spring (part 6116) or teeing the vacuum hose into all four throttle bodies, otherwise the valve won't open properly.
Key Features
- Adjustable venting bias from 100% recirculation to 100% atmosphere
- Balanced piston design resists boost creep, holds unlimited boost pressure
- Up to 30% faster boost recovery on gearshift versus a factory diverter valve
- Direct bolt on kit, fits factory location, no modifications required
- 35mm/30mm dual port valve body
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your vehicle's model year and configuration before ordering, particularly for the Pulsar GTiR and 300ZX applications.
Not sure if this suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Nissan | 180SX | S13 | SR20DET |
| Nissan | 300ZX | Z32 | VG30DETT |
| Nissan | Pulsar GTiR | N14 | SR20DET |
| Nissan | Silvia | S13 | SR20DET |
| Subaru | STI | GC8 | - |
| Subaru | WRX | GC8 | - |
Technical Specifications
| Spec | Value |
|---|---|
| Valve Type | Dual port variable blow off valve (BOV) with adjustable venting bias |
| Port Sizes | 35 mm / 30 mm |
| Piston Design | Balanced piston, boost pressure acting on both sides to prevent forced opening under high boost |
| Venting Adjustment | Continuously variable from 100% recirculation to 100% atmosphere via twist adjusting ring |
| Kit Type | Direct bolt-on, fits factory location, no modifications required |
| Related Part (Nissan Pulsar GTiR N14) | Softer spring, part # 6116, required for correct valve operation |
No instructions available for this product.
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