GFB Hybrid Dual Port BOV
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GFB Hybrid Dual Port BOV Blow Off Valve 33mm Mitsubishi Evo 1-X/Subaru WRX, STI GC8 97-98
GFB built its reputation on the original dual port blow off valve, and the Hybrid is the modern continuation of that idea. Staged recirc and atmosphere venting means you get the classic blow off sound without the stalling or backfiring issues that plague single port atmo valves on MAF equipped cars, making it a great fit for the Mitsubishi Evo and Subaru WRX.
This listing covers the 33mm Hybrid BOV for Mitsubishi Evo 1-3, Evo 4-6, Evo 7-9, Evo X, Lancer Ralliart, 3000GT/GTO and Colt Ralliart models, along with Subaru Liberty GT BM/BR (2010-2014) and WRX/STI GC8 (97-98). Direct bolt-on kits are available for these applications, so check the listing page for your specific vehicle option.
Key Features
- 33mm valve body
- Dual port staged venting design
- Adjustable full recirc, full atmosphere, or 50/50 venting bias
- Reduces stalling and backfiring on MAF equipped vehicles
- Direct bolt-on kit for supported models
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your vehicle's chassis and model year 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 |
|---|---|---|---|
| Mitsubishi | 3000GT/GTO | Z16A | 6G72 |
| Mitsubishi | Colt Ralliart | Z27A | 4G15T |
| Mitsubishi | Evo 1-3 | CD9A/CE9A | 4G63 |
| Mitsubishi | Evo 4-6 | CN9A/CP9A | 4G63 |
| Mitsubishi | Evo 7-9 | CT9A | 4G63 |
| Mitsubishi | Evo X | CZ4A | 4B11T |
| Mitsubishi | Lancer Ralliart | CY4A | 4B11T |
| Subaru | Liberty GT | BM/BR | EJ255 |
| Subaru | WRX | GC8 | EJ20 |
| Subaru | WRX STI | GC8 | EJ20 |
Technical Specifications
| Spec | Value |
|---|---|
| Valve Type | Dual Port (Hybrid) Blow Off Valve |
| Valve/Port Size | 33mm |
| Venting Configuration | Adjustable — Full Recirculation, Full Atmosphere, or 50/50 Split |
No instructions available for this product.

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