GFB Blow Off Valves, Diverter Valves & Boost Control | Chicane Australia

• DV+ diverter valves, with and without integrated solenoid, plus DVX sound-adjustable and VTA atmosphere diverter valves
• Hybrid Dual Port, Respons Dual Port Variable and Mach 2 recirculating plumb back blow off valves
• Deceptor Pro II electronic blow off valves and replacement main wiring looms
• EX38 and EX50 external wastegates, WGA internal wastegate actuators and replacement wastegate springs and flanges
• G-Force boost solenoids and electronic boost controller kits, plus a boost tap for Golf Mk5/Mk6
• FX-R and FX-S fuel pressure regulators with AN and NPT adaptor fittings
• Boost and fuel pressure gauges, hose blanking plugs and BOV trumpets and filters
• Weld-on adaptor pipes (25mm and 38mm, alloy and stainless), V-band mounting kits, SV52 V-band adaptors and BOV inlet pipe mount adaptors
• 2-piece underdrive pulley kit for EJ20/EJ25 Subarus
• Replacement piston springs, soft springs and BOV seal kits
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GFB covers a wide spread of turbo platforms: Subaru WRX and STI across GC/GD/GG/GR/VA generations, Forester XT and Liberty GT (BL/BP); Mitsubishi Evo 1 to 10 including Evo X (CZ4A); VW Golf GTI (Mk4–Mk7), Audi A3/S3 (8N/8L/8P/8V) and TT, and Skoda Octavia (Mk2/Mk3) on EA113/EA888; BMW N20-powered 1/2/3/4 Series; Alfa Romeo Giulia, Giulietta and MiTo; Ford Falcon XR6 Turbo (BA/BF/FG), Focus ST/RS and Ranger (P375) 2.3L EcoBoost; Hyundai i30 N and Kia Stinger; Mercedes-Benz A/B/C/E-Class; Nissan Skyline R32/R33/R34, Silvia/180SX (S13), 200SX (S14/S15), 300ZX (Z32) and Pulsar GTiR (N14); Toyota Supra (JZA80), C-HR (AX10/AX50) and Lexus NX/IS/RX/RC/GS turbo models; Holden Commodore (ZB); and Mazda 3/6 MPS and CX-7. Universal weld-on adaptors, V-band kits and fittings suit custom intake and wastegate plumbing.

• GFB for Mitsubishi
• GFB for Ford
• GFB for BMW
• GFB for VW & Audi
• GFB for Subaru

Match the listing to your chassis and engine code rather than model name alone. Subaru buyers should note the split between GC8 MY94-96 (20mm) and MY97-98 (35mm/30mm) valve sizings, and the separate GR/GH, SH Forester XT and BL/BP Liberty GT fitments. On VW/Audi platforms, confirm whether the engine is EA113 or EA888 and check the Mk5/Mk6/Mk7 and 8P/8V distinctions, as these determine whether an integrated-solenoid DV+ is required. BMW N20 applications vary by model year and gearbox, so check the listing detail. Weld-on pipes and adaptors are sized (25mm or 38mm, alloy or stainless), and V-band adaptors are offered in TS and Tial patterns, so measure your existing plumbing first. Replacement springs are listed by part number, such as the DV+ piston spring for T9351-T9359 and the soft spring for T9354/T9360, and AN fittings are listed against specific FXR regulator models.

Most GFB valves are a direct bolt-in using the factory diverter valve location, but installation by a professional is recommended, particularly where wiring, welding or tuning changes are involved. Deceptor Pro II units require a 12V switched feed run to the cabin for dash-mounted control, plus the correct main wiring loom. Boost gauges and the boost tap need a suitable vacuum/boost source; on some Golf Mk5/Mk6 applications the GFB boost tap is designed to provide it. External wastegates and universal BOVs need weld-on flanges, adaptor pipes or V-band mounting kits, which are sold separately. If the vehicle runs an aftermarket tune, the boost solenoid duty cycle should be reviewed by your tuner after installing a DV+ with integrated solenoid.

Recirculating or atmospheric, which one do I want? Recirculating valves such as the DV+ send air back into the intake, which suits MAF-based factory tuning and stays quiet. Atmospheric and hybrid valves vent some air to atmosphere for the classic sound but can upset factory tuning on MAF-equipped cars if not matched correctly.

Will a GFB BOV trigger a check engine light? On MAF-equipped cars a fully atmospheric valve can cause a lean surge or CEL. GFB's Hybrid and Respons valves are designed to recirculate enough air to avoid this in most cases, and a fully mapped ECU handles any valve better.

Does GFB make anything for boost control, not just valves? Yes. The G-Force III electronic boost controller kit and G-Force 3-port solenoid are in the range, alongside EX38 and EX50 external wastegates and WGA internal wastegate actuators.

Do the underdrive pulleys suit my WRX? The 2-piece kit covers EJ20/EJ25-engined GC/GD/GG Subarus and SF/SG Foresters, and includes both crank and alternator pulleys.