Forge Motorsport Blow Off Valve and Kit for Audi, VW, SEAT, and Skoda
SKU: FMFSITAT-POL
High-performance blow-off valve for VAG 2.0 FSiT and TSi engines. Delivers atmospheric sound and improved reliability over the failure-prone factory solenoid.
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Fast UK Delivery
Delivered in 2-3 Business DaysFast UK Delivery on all Orders, please see delivery information.
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30 Day Money Back
GuaranteeAll returns must be postmarked within fourteen (14) days of the purchase date. All returned items must be in new and unused condition, with all original tags and labels attached.
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The Forge Motorsport FMFSITAT is a complete atmospheric blow-off valve replacement kit for the VAG 2.0 FSiT and TSi engine ranges. Standard factory valves use a plastic diaphragm that is known to fail, especially on vehicles with an ECU remap. This kit replaces the original solenoid with a robust, piston-driven valve that can handle significantly higher boost pressures. In addition to improved reliability, this valve provides the iconic "pssh" atmospheric sound during throttle lift-off. The kit includes a high-quality silicone hose . This ensures a professional look while significantly upgrading your turbocharger’s pressure management system.
- 1.4T (with additional fitting kit FMBGFK3)
- 1.8T
- 2.0T

Core Performance Features
- Direct OEM replacement
- Made from the highest quality Aircraft quality T6061 billet aluminium construction
- Fully compatible with OEM electronics
- Fully serviceable piston
- Capable to 600HP (with uprated spring kit)
- Utilising world leading springs for more precise operation and consistency
- All internal and external components have been made in the UK
- Pistons use heat stabilised Viton O-rings
- Lubricated with high temperature Mobil1 grease
- Fully serviceable and rebuildable in minutes
- Unlike other valves on the market, ours produce no check engine lights (EML)
- Improved dynamic throttle response
- Consistent turbo boost & reduced turbo lag
- Covered by the Forge Lifetime Warranty*

⭐ Amazing product very well made. Don’t spend your money anywhere else the noise this gives off is fantastic. Can’t recommend enough ⭐
⭐ Easy to install, sounds great instructions easy to follow. Would highly recommend ⭐
⭐ Great quality product installed on a 2008 Audi TTS. Easy install, directions for install and packaging is top quality, noise is produces is 2nd to none ⭐
| Make | Engines / Models |
|---|---|
| VW | Golf Mk5 / Mk6 GTI & R |
| Audi | S3 (8P) / TT / TTS |
| Seat / Skoda | Leon Cupra / Octavia VRS |
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