GFB Respons Dual Port Variable Blow Off Valve - Subaru WRX/STI (GC8) MY99-00 / Forester GT (SF) / Forester XT (SG) MY03-05 / Liberty B4 (BE/BH)
Application: Subaru WRX/STI (GC8) MY99-00 / Forester GT (SF) / Forester XT (SG) MY03-05 / Liberty B4 (BE/BH)
Part Type: Respons Dual Port Variable Blow Off Valve
GFB pioneered the dual port blow off valve back in 1999, and the Respons takes that concept further with a patented venting bias adjustment system. It lets you dial in exactly how much air vents to atmosphere versus recirculating, giving you the blow off sound you want without the stalling or over-fuelling issues that plague sensitive MAF based cars. Fitted to your Subaru WRX, STI, Forester or Liberty B4, it also improves throttle response and boost recovery between gearshifts.
This listing covers the GC8 chassis WRX and STI (MY99-00), Forester GT (SF), Forester XT (SG) MY03-05, and Liberty B4 (BE/BH). It's a direct bolt-on kit into the factory location with no modifications required.
Important: This valve is only compatible with vehicles using the Diamond flange. Triangle flange equipped vehicles require part T9503 instead - check your factory BOV flange shape before ordering.
Key Features
- Patented venting bias adjustment - from 100% recirculating to 100% atmosphere venting
- Balanced piston design prevents the valve being forced open under high boost
- GFB TMS operating principle - stays shut until required to open
- Up to 30% faster boost recovery on gearshift versus a factory diverter valve
- Direct bolt-on fitment, no adaptors or modifications required
- SKU: T9000
Vehicle Fitment
- Subaru WRX/STI (GC8) MY99-00
- Subaru Forester GT (SF)
- Subaru Forester XT (SG) MY03-05
- Subaru Liberty B4 (BE/BH)
Please confirm your vehicle's year and factory BOV flange type before ordering.
Supplier-listed applications:
- Subaru WRX/STI (GC8) MY99-00
- Subaru Forester GT (SF)
- Subaru Forester XT (SG) MY03-05
- Subaru Liberty B4 (BE/BH)
Note: Compatibility information is provided as a general guide only. Some vehicles may have multiple part variations for the same model or engine. To ensure this product is the correct fit and to be eligible for our Fitment Guarantee, please contact our team before purchasing.
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We offer free standard shipping on all orders over $150 (excluding bulky items). For orders under $150. Standard shipping starts at $9.95. Express shipping starts at $14.95. Shipping costs can be calculated in the cart or at checkout. Orders containing bulky items such as batteries, brake discs, liquids, and lift kits may incur additional shipping charges, particularly to remote or regional areas.
Dispatch & Handling
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For enquires on same day delivery or pickup, please contact our team before ordering to check availability. Custom or order in only items may have longer lead times. For more details on shipping, see our Delivery information page.
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If you change your mind or need to cancel an order, simply contact us at contact@tjautoparts.com.au within 30 days of delivery. Items should be unused and in their original packaging. A small restocking/admin fee of 5–20% may apply to help cover processing costs. This fee is only applicable at the discretion of our staff and may not apply to all orders. Return shipping is covered by you unless we sent the wrong or faulty item, in which case we’ll take care of it. Once we receive your return, refunds are processed quickly, usually within 48 hours, with up to 5 business days for your bank to complete the transfer.
We’re here to help make returns easy and hassle free! Contact us with any questions.
Warranty
All products come with the manufacturer’s warranty. If you experience any issues, please contact us at contact@tjautoparts.com.au. For full details on warranty coverage and claims, please visit our Returns page.
