GFB Mach 2 Recirculating Blow Off Valve - Subaru WRX/STI (GC8) MY94-96 / Toyota Supra (JZA80) - 20mm
The GFB Mach 2 20mm is a recirculating blow off valve for the MY94-96 Subaru WRX and STI (GC8) and the Toyota Supra (JZA80). GFB's TMS technology returns the engine to full boost up to 30 percent faster than the factory diverter valve, sharpening throttle response without adding noise. It comes as a 100 percent plumb back valve, and atmosphere conversion kits are sold separately for anyone who wants an audible blow off. The WRX and STI may need their factory hoses modified to relocate the valve, and the JZA80 Supra is not a direct bolt-on and needs hose modification to install.
Features
- TMS technology for up to 30 percent quicker boost recovery
- Effectively unlimited boost holding
- 100 percent recirculating (plumb back) configuration
- 20mm valve size
- Optional atmosphere conversion kits available separately
- Factory hoses may need modifying to relocate the valve
Specifications
- Brand: GFB
- Product Type: Recirculating Blow Off Valve
- Series: Mach 2
- Valve Size: 20mm
- Technology: GFB TMS
- Venting: 100 percent recirculating (plumb back)
- Boost Recovery: Up to 30 percent faster than the factory valve
- Installation: Hose modification and relocation (may be needed on the WRX/STI, required on the Supra)
- Part Number: T9120
Vehicle Compatibility: 2 applications across 2 makes. Select a make to view.
Subaru (1)
| Model | Variant | Engine | Years | Notes |
|---|---|---|---|---|
| WRX / STI | GC8 | 1994-1996 | Factory hoses may need modifying to relocate the valve |
Toyota (1)
| Model | Variant | Engine | Years | Notes |
|---|---|---|---|---|
| Supra | JZA80 | Not a direct bolt-on, hose modification required |
Please confirm fitment against your vehicle before ordering. Contact us if you need help selecting the right part.