CNC Machined Aluminium Blow Off Valve Adaptor for Audi A3 VAG FSiT TFSi Bov Turbo System Upgrade

Upgrade the audible and functional performance of your VAG turbo with the Audi A3 Blow Off Valve Adaptor for VAG FSiT TFSi Bov Turbo. This CNC‑machined aluminium adaptor is designed to sit adjacent to your existing solenoid, enabling a dedicated vent-to-atmosphere path and delivering the signature lift-off sound that enthusiasts love. Built to harmonize with the 710D ECU Management system, it enhances the experience without compromising drivability.

Key benefits include a direct bolt-on installation, full serviceability, and extended screws included for a secure fit. The adaptor is boxed and brand new, ensuring you receive a precise, ready-to-install component that tightens up the look and feel of your VAG turbo setup.

Application and fitment are broad for the VAG TSFI turbo family, including 1.4, 1.8, and 2.0 engines. It’s designed as a direct OEM bolt-on addition that works alongside the existing solenoid to produce the characteristic blow-off sound. It will not fit twin‑charged 1.4 engines, models from 2014 onwards, or any diesel engines. This part is intended for TFSI/TFSI Turbo engines only.

Vehicle compatibility (selected examples) includes Audi A3 1.4/1.8/2.0 TSI, Audi A4 1.8/2.0 FSI Turbo, Audi A6 2.0 FSI Turbo, S3 2.0 Turbo, TT 2.0 Turbo, SEAT Leon 1.4/2.0 Turbo, SEAT Altea 2.0 Turbo, Skoda Octavia 1.4/2.0 Turbo, and VW Golf Mk5/Mk6 1.4/2.0 Turbo variants. If you drive a VAG model with a TSFI/TFSI turbo engine, this adaptor is designed to integrate with your boost and sound goals.

Benefits & Tips

• 2-in-1 value: gain a pronounced BOV sound while retaining reliable venting behavior with your stock ECU mapping.
• Direct‑fit, OEM‑style installation: designed to mount next to the existing solenoid for a clean, factory‑look upgrade.
• Maintenance friendly: fully serviceable, so you can inspect or replace components as needed without removing the entire intake system.

Product specifications

• Material: Aluminium (CNC machined) for durability and precise tolerances
• Vent type: Vent to Atmosphere action for the classic blow-off sound
• Compatibility: Designed for VAG TSFI/TFSi turbo engines, including 1.4, 1.8, and 2.0 TSI variants
• Fitment: Direct OEM bolt-on fitment (next to existing solenoid)
• Includes: 1 x Blow Off Valve Adapter, 3 x Bolts
• Origin: Mainland China
• Notes: This part does not fit twin‑charged 1.4 engines, 2014+ models, or any diesel engines

Package includes

• 1 x Blow Off Valve Adapter
• 3 x Bolts

Warnings/Reminders

• All items are to be fitted by a professional and no instructions are included for this reason. Professional fitment is mandatory.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

At intercyprus.com since 2002 — trusted for quality and reliability.